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Gnoma [55]
3 years ago
10

4m-4-8=-2m+12 please help, thanks.

Mathematics
1 answer:
alexandr402 [8]3 years ago
6 0

Answer:

m=4

Step-by-step explanation:

4m-4-8=-2m+12

Combine like terms

4m-12 = -2m +12

Add 2m to each side

4m+2m -12 =-2m +2m+12

6m-12 = 12

Add 12 to each side

6m-12+12 =12+12

6m =24

Divide by 6

6m/6 =24/6

m =4

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The incorrect work of a student to solve an equation 2(y + 6) = 4y is shown below.
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Answer:

<h3>⇒ A. 2 should be distributed as 2y + 12, y = 6</h3>

Step-by-step explanation:

Here are the steps to solve this equation:

<u>Given:</u>

First step: 2(y+6)-4y

Use the distributive property.

<u>Distributive property:</u>

<h3>⇒ A(B+C)=AB+AC</h3>

2(y+6)

2*y=2y

2*6=12

2y+12

Isolate the term of y from one side of the equations.

2y+12=4y

Subtract by 12 from both sides.

2y+12-12=4y-12

Solve.

2y=4y-12

Then, you subtract by 4y from both sides.

2y-4y=4y-12-4y

Solve.

2y-4y=-2y

-2y=-12

Divide by -2 from both sides.

\sf{\dfrac{-2y}{-2}=\dfrac{-12}{-2}}

Solve.

Divide the numbers from left to right.

<u>Solutions:</u>

-12/-2=6

\Longrightarrow: \boxed{\sf{y=6}}

  • <u>Therefore, the correct answer is A. "2 should be distributed as 2y+12, y=6".</u>

I hope this helps. Let me know if you have any questions.

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2 years ago
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