-2(y-7)=-9y+42

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Solution for -2(y-7)=-9y+42 equation:


Simplifying
-2(y + -7) = -9y + 42

Reorder the terms:
-2(-7 + y) = -9y + 42
(-7 * -2 + y * -2) = -9y + 42
(14 + -2y) = -9y + 42

Reorder the terms:
14 + -2y = 42 + -9y

Solving
14 + -2y = 42 + -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.
14 + -2y + 9y = 42 + -9y + 9y

Combine like terms: -2y + 9y = 7y
14 + 7y = 42 + -9y + 9y

Combine like terms: -9y + 9y = 0
14 + 7y = 42 + 0
14 + 7y = 42

Add '-14' to each side of the equation.
14 + -14 + 7y = 42 + -14

Combine like terms: 14 + -14 = 0
0 + 7y = 42 + -14
7y = 42 + -14

Combine like terms: 42 + -14 = 28
7y = 28

Divide each side by '7'.
y = 4

Simplifying
y = 4

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