Solving for y in an Equation: -2(-4+y)-y=0

Solve for y:

2(4+y)y=0 -2(-4+y)-y=0

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:07 Let's solve this math problem together.
00:10 First, open the parentheses carefully. Multiply each term inside by the factors outside. Take your time.
00:21 Now, let's collect all the like terms. This will simplify the equation.
00:28 Next, arrange the equation so that the unknown variable, Y, is on just one side.
00:35 Good job! Now, isolate Y to find its value.
00:43 Let's break down the fraction into a whole number and a remainder. Keep going, you're doing great!
00:54 Now, convert the fraction into a whole number. Almost there.
01:02 And that's how we find the solution to this question. Well done!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Solve for y:

2(4+y)y=0 -2(-4+y)-y=0

2

Step-by-step solution

To solve the equation 2(4+y)y=0-2(-4 + y) - y = 0, we will follow these steps:

  • Step 1: Distribute 2 -2 inside the parenthesis.
  • Step 2: Simplify and combine like terms.
  • Step 3: Solve the equation for yy.

Let's proceed with the solution:

Step 1: Distribute 2-2 in the expression 2(4+y)-2(-4 + y). This will transform the expression as follows:

2(4+y)=2×4+(2)×y=82y-2(-4 + y) = -2 \times -4 + (-2) \times y = 8 - 2y.

After distributing, the equation becomes:

82yy=08 - 2y - y = 0.

Step 2: Combine like terms. Notice that 2yy-2y - y is equivalent to 3y-3y:

83y=08 - 3y = 0.

Step 3: Solve for yy. First, isolate the term with yy by subtracting 8 from both sides:

3y=8-3y = -8.

Next, divide both sides by 3-3 to find yy:

y=83=83y = \frac{-8}{-3} = \frac{8}{3}.

Thus, the solution for yy is 83\frac{8}{3}, which can be written as a mixed number:

y=223y = 2\frac{2}{3}.

Therefore, the solution to the problem is y=223y = 2\frac{2}{3}.

3

Final Answer

y=223 y=2\frac{2}{3}

Practice Quiz

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Solve for x:

\( 2(4-x)=8 \)

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