-9=4+y

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Solution for -9=4+y equation: 


Simplifying
-9 = 4 + y

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

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

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

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

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

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

Simplifying
y = -13

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