-7y-11=9y+21

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Solution for -7y-11=9y+21 equation:


Simplifying
-7y + -11 = 9y + 21

Reorder the terms:
-11 + -7y = 9y + 21

Reorder the terms:
-11 + -7y = 21 + 9y

Solving
-11 + -7y = 21 + 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.
-11 + -7y + -9y = 21 + 9y + -9y

Combine like terms: -7y + -9y = -16y
-11 + -16y = 21 + 9y + -9y

Combine like terms: 9y + -9y = 0
-11 + -16y = 21 + 0
-11 + -16y = 21

Add '11' to each side of the equation.
-11 + 11 + -16y = 21 + 11

Combine like terms: -11 + 11 = 0
0 + -16y = 21 + 11
-16y = 21 + 11

Combine like terms: 21 + 11 = 32
-16y = 32

Divide each side by '-16'.
y = -2

Simplifying
y = -2

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