Question

Solve the equation.

Answer 1

Hey there!!

Equation given :

... 78 = -2 ( m + 3 ) + m

... 78 = -2m - 6 + m

... 78 = -m - 6

... 78 + 6 = -m

... 84 = -m

... m = -84

Hope my answer helps!!

Answer 2

Hello there!

The answer should be the third option C.

$78 = -2(m + 3) + m$

First you had to simplify from both sides of the equations.

$78=-2(m+3)+m$

$78=(-2)(m)+(-2)(3)+m$

$78=-2m+-6+m$

$78=(-2m+m)+(-6)$

$78=-m+-6$

$78=-m-6$

Then you can flip by the equation.

$-m-6=78$

Add by 6 from both sides.

$-m-6+6=78+6$

$-m=84$

Divide by -1 from both sides.

$\frac{-m}{-1}=\frac{84}{-1}$

Simplify should be the correct answer.

$m=-84$

Hope this helps!

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Have a great day!

-Charlie