4=-9+y

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Solution for 4=-9+y equation: 


Simplifying
4 = -9 + y

Solving
4 = -9 + 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.
4 + -1y = -9 + y + -1y

Combine like terms: y + -1y = 0
4 + -1y = -9 + 0
4 + -1y = -9

Add '-4' to each side of the equation.
4 + -4 + -1y = -9 + -4

Combine like terms: 4 + -4 = 0
0 + -1y = -9 + -4
-1y = -9 + -4

Combine like terms: -9 + -4 = -13
-1y = -13

Divide each side by '-1'.
y = 13

Simplifying
y = 13

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