-15+13=4+y

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Solution for -15+13=4+y equation:


Simplifying
-15 + 13 = 4 + y

Combine like terms: -15 + 13 = -2
-2 = 4 + y

Solving
-2 = 4 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-2 + -1y = 4 + y + -1y

Combine like terms: y + -1y = 0
-2 + -1y = 4 + 0
-2 + -1y = 4

Add '2' to each side of the equation.
-2 + 2 + -1y = 4 + 2

Combine like terms: -2 + 2 = 0
0 + -1y = 4 + 2
-1y = 4 + 2

Combine like terms: 4 + 2 = 6
-1y = 6

Divide each side by '-1'.
y = -6

Simplifying
y = -6

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