-(18-3y)=7y+2y

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Solution for -(18-3y)=7y+2y equation:


Simplifying
-1(18 + -3y) = 7y + 2y
(18 * -1 + -3y * -1) = 7y + 2y
(-18 + 3y) = 7y + 2y

Combine like terms: 7y + 2y = 9y
-18 + 3y = 9y

Solving
-18 + 3y = 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.
-18 + 3y + -9y = 9y + -9y

Combine like terms: 3y + -9y = -6y
-18 + -6y = 9y + -9y

Combine like terms: 9y + -9y = 0
-18 + -6y = 0

Add '18' to each side of the equation.
-18 + 18 + -6y = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -6y = 0 + 18
-6y = 0 + 18

Combine like terms: 0 + 18 = 18
-6y = 18

Divide each side by '-6'.
y = -3

Simplifying
y = -3

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