-4=-27y+7-(-15y)+13

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Solution for -4=-27y+7-(-15y)+13 equation: 


Simplifying
-4 = -27y + 7 + -1(-15y) + 13

Remove parenthesis around (-15y)
-4 = -27y + 7 + -1 * -15y + 13

Multiply -1 * -15
-4 = -27y + 7 + 15y + 13

Reorder the terms:
-4 = 7 + 13 + -27y + 15y

Combine like terms: 7 + 13 = 20
-4 = 20 + -27y + 15y

Combine like terms: -27y + 15y = -12y
-4 = 20 + -12y

Solving
-4 = 20 + -12y

Solving for variable 'y'.

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

Add '12y' to each side of the equation.
-4 + 12y = 20 + -12y + 12y

Combine like terms: -12y + 12y = 0
-4 + 12y = 20 + 0
-4 + 12y = 20

Add '4' to each side of the equation.
-4 + 4 + 12y = 20 + 4

Combine like terms: -4 + 4 = 0
0 + 12y = 20 + 4
12y = 20 + 4

Combine like terms: 20 + 4 = 24
12y = 24

Divide each side by '12'.
y = 2

Simplifying
y = 2

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