13y-8y-12=-5y-42

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Solution for 13y-8y-12=-5y-42 equation:


Simplifying
13y + -8y + -12 = -5y + -42

Reorder the terms:
-12 + 13y + -8y = -5y + -42

Combine like terms: 13y + -8y = 5y
-12 + 5y = -5y + -42

Reorder the terms:
-12 + 5y = -42 + -5y

Solving
-12 + 5y = -42 + -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.
-12 + 5y + 5y = -42 + -5y + 5y

Combine like terms: 5y + 5y = 10y
-12 + 10y = -42 + -5y + 5y

Combine like terms: -5y + 5y = 0
-12 + 10y = -42 + 0
-12 + 10y = -42

Add '12' to each side of the equation.
-12 + 12 + 10y = -42 + 12

Combine like terms: -12 + 12 = 0
0 + 10y = -42 + 12
10y = -42 + 12

Combine like terms: -42 + 12 = -30
10y = -30

Divide each side by '10'.
y = -3

Simplifying
y = -3

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