3(y-4)-5(y+7)=2-9y

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Solution for 3(y-4)-5(y+7)=2-9y equation:


Simplifying
3(y + -4) + -5(y + 7) = 2 + -9y

Reorder the terms:
3(-4 + y) + -5(y + 7) = 2 + -9y
(-4 * 3 + y * 3) + -5(y + 7) = 2 + -9y
(-12 + 3y) + -5(y + 7) = 2 + -9y

Reorder the terms:
-12 + 3y + -5(7 + y) = 2 + -9y
-12 + 3y + (7 * -5 + y * -5) = 2 + -9y
-12 + 3y + (-35 + -5y) = 2 + -9y

Reorder the terms:
-12 + -35 + 3y + -5y = 2 + -9y

Combine like terms: -12 + -35 = -47
-47 + 3y + -5y = 2 + -9y

Combine like terms: 3y + -5y = -2y
-47 + -2y = 2 + -9y

Solving
-47 + -2y = 2 + -9y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '9y' to each side of the equation.
-47 + -2y + 9y = 2 + -9y + 9y

Combine like terms: -2y + 9y = 7y
-47 + 7y = 2 + -9y + 9y

Combine like terms: -9y + 9y = 0
-47 + 7y = 2 + 0
-47 + 7y = 2

Add '47' to each side of the equation.
-47 + 47 + 7y = 2 + 47

Combine like terms: -47 + 47 = 0
0 + 7y = 2 + 47
7y = 2 + 47

Combine like terms: 2 + 47 = 49
7y = 49

Divide each side by '7'.
y = 7

Simplifying
y = 7

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