Solve Division with Decimals: Evaluating -3.5 ÷ (-7) + 14

3.5:7+14= ? -3.5:-7+14=\text{ ?}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Let's solve according to the correct order of operations
00:07 Write division as a fraction
00:10 Always solve multiplication and division before addition and subtraction
00:16 Negative divided by negative always equals positive
00:29 Break down 7 into factors 3.5 and 2
00:35 Simplify what we can
00:44 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

3.5:7+14= ? -3.5:-7+14=\text{ ?}

2

Step-by-step solution

We must solve the exercise from left to right.

First, we will rewrite the division as a simple fraction in the following way:

3.57+14= \frac{-3.5}{-7}+14=

Note that we are dividing a negative number by a negative number, so the result must be a positive number:

=+ \frac{-}{-}=+

We will then break down 7 into a multiplication exercise:

3.53.5×2+14= \frac{3.5}{3.5\times2}+14=

Finally, we will reduce the 3.5 in both the numerator and denominator of the fraction to get our answer:

12+14=1412 \frac{1}{2}+14=14\frac{1}{2}

3

Final Answer

+1412 +14\frac{1}{2}

Practice Quiz

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What will be the sign of the result of the next exercise?

\( (-2)\cdot(-4)= \)

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