-3y-2=9y+21

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Solution for -3y-2=9y+21 equation:


Simplifying
-3y + -2 = 9y + 21

Reorder the terms:
-2 + -3y = 9y + 21

Reorder the terms:
-2 + -3y = 21 + 9y

Solving
-2 + -3y = 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.
-2 + -3y + -9y = 21 + 9y + -9y

Combine like terms: -3y + -9y = -12y
-2 + -12y = 21 + 9y + -9y

Combine like terms: 9y + -9y = 0
-2 + -12y = 21 + 0
-2 + -12y = 21

Add '2' to each side of the equation.
-2 + 2 + -12y = 21 + 2

Combine like terms: -2 + 2 = 0
0 + -12y = 21 + 2
-12y = 21 + 2

Combine like terms: 21 + 2 = 23
-12y = 23

Divide each side by '-12'.
y = -1.916666667

Simplifying
y = -1.916666667

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