4+(-y)=9

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Solution for 4+(-y)=9 equation: 


Simplifying
4 + (-1y) = 9

Solving
4 + (-1y) = 9

Solving for variable 'y'.

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

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 = 5
(-1y) = 5

Divide each side by '-1'.
y = -5

Simplifying
y = -5

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