5y+15=-12y-21+8y

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Solution for 5y+15=-12y-21+8y equation:


Simplifying
5y + 15 = -12y + -21 + 8y

Reorder the terms:
15 + 5y = -12y + -21 + 8y

Reorder the terms:
15 + 5y = -21 + -12y + 8y

Combine like terms: -12y + 8y = -4y
15 + 5y = -21 + -4y

Solving
15 + 5y = -21 + -4y

Solving for variable 'y'.

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

Add '4y' to each side of the equation.
15 + 5y + 4y = -21 + -4y + 4y

Combine like terms: 5y + 4y = 9y
15 + 9y = -21 + -4y + 4y

Combine like terms: -4y + 4y = 0
15 + 9y = -21 + 0
15 + 9y = -21

Add '-15' to each side of the equation.
15 + -15 + 9y = -21 + -15

Combine like terms: 15 + -15 = 0
0 + 9y = -21 + -15
9y = -21 + -15

Combine like terms: -21 + -15 = -36
9y = -36

Divide each side by '9'.
y = -4

Simplifying
y = -4

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