-2+y+15=5y+21

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Solution for -2+y+15=5y+21 equation:


Simplifying
-2 + y + 15 = 5y + 21

Reorder the terms:
-2 + 15 + y = 5y + 21

Combine like terms: -2 + 15 = 13
13 + y = 5y + 21

Reorder the terms:
13 + y = 21 + 5y

Solving
13 + y = 21 + 5y

Solving for variable 'y'.

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

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

Combine like terms: y + -5y = -4y
13 + -4y = 21 + 5y + -5y

Combine like terms: 5y + -5y = 0
13 + -4y = 21 + 0
13 + -4y = 21

Add '-13' to each side of the equation.
13 + -13 + -4y = 21 + -13

Combine like terms: 13 + -13 = 0
0 + -4y = 21 + -13
-4y = 21 + -13

Combine like terms: 21 + -13 = 8
-4y = 8

Divide each side by '-4'.
y = -2

Simplifying
y = -2

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