3y+9=-21+2y

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


Simplifying
3y + 9 = -21 + 2y

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

Solving
9 + 3y = -21 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
9 + 3y + -2y = -21 + 2y + -2y

Combine like terms: 3y + -2y = 1y
9 + 1y = -21 + 2y + -2y

Combine like terms: 2y + -2y = 0
9 + 1y = -21 + 0
9 + 1y = -21

Add '-9' to each side of the equation.
9 + -9 + 1y = -21 + -9

Combine like terms: 9 + -9 = 0
0 + 1y = -21 + -9
1y = -21 + -9

Combine like terms: -21 + -9 = -30
1y = -30

Divide each side by '1'.
y = -30

Simplifying
y = -30

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