Solve: 2/3(12+0-5) Using Order of Operations

Fraction Multiplication with Parenthetical Expressions

23(12+05)= \frac{2}{3}(12+0-5)=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:07 Let's solve this problem together!
00:10 First, open the parentheses correctly.
00:13 The outer term multiplies each term inside the parentheses.
00:19 Remember, every whole number can be seen as having a denominator of one.
00:24 Don't forget, any number multiplied by zero is always zero!
00:28 Multiply the numerators together, and then the denominators.
00:33 Now, let's convert the fraction to a number with a remainder.
00:37 And that's how we find the solution. Well done!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

23(12+05)= \frac{2}{3}(12+0-5)=

2

Step-by-step solution

According to the distribution law rules, we will multiply both thirds by each term in parentheses:

23×12+23×023×5= \frac{2}{3}\times12+\frac{2}{3}\times0-\frac{2}{3}\times5=

Remember that any whole number can be written as a fraction with a denominator of 1, except for the digit 0.

Let's write the exercise in the following form:

23×121+23×023×51= \frac{2}{3}\times\frac{12}{1}+\frac{2}{3}\times0-\frac{2}{3}\times\frac{5}{1}=

We multiply numerator by numerator and denominator by denominator in each multiplication exercise.

Remember that when we multiply any number by 0, the result will be 0.

Therefore we get:

243+0103= \frac{24}{3}+0-\frac{10}{3}=

Let's solve the first fraction exercise, and simplify the remaining fraction to get the exercise:

8313=423 8-3\frac{1}{3}=4\frac{2}{3}

3

Final Answer

423 4\frac{2}{3}

Key Points to Remember

Essential concepts to master this topic
  • Order of Operations: Always solve parentheses first, then multiply by fractions
  • Distribution Method: Multiply 23 \frac{2}{3} by each term: 12, 0, and -5
  • Check: Verify 23×7=143=423 \frac{2}{3} \times 7 = \frac{14}{3} = 4\frac{2}{3}

Common Mistakes

Avoid these frequent errors
  • Multiplying the fraction by only one term in parentheses
    Don't multiply 23 \frac{2}{3} by just 12 and ignore the rest = wrong answer of 8! This violates the distributive property. Always multiply the fraction by every single term inside the parentheses: 12, 0, and -5.

Practice Quiz

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FAQ

Everything you need to know about this question

Should I solve the parentheses first or distribute the fraction first?

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Both methods work! You can either solve (12+0-5) = 7 first, then multiply by 23 \frac{2}{3} , OR distribute 23 \frac{2}{3} to each term. The answer will be the same.

Why does multiplying by 0 give me 0?

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The zero property of multiplication states that any number times 0 equals 0. So 23×0=0 \frac{2}{3} \times 0 = 0 , which simplifies your calculation.

How do I convert my answer to a mixed number?

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Divide the numerator by the denominator. 143=14÷3=4 \frac{14}{3} = 14 ÷ 3 = 4 remainder 2 2 , so the answer is 423 4\frac{2}{3} .

What if I get confused with the negative sign?

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Remember that subtraction means adding a negative. So 12+0-5 is the same as 12+0+(-5). When distributing, 23×(5)=103 \frac{2}{3} \times (-5) = -\frac{10}{3} .

Can I simplify fractions before multiplying?

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Yes! If you see common factors, simplify first to make calculations easier. But in this problem, 23 \frac{2}{3} is already in lowest terms.

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