9=4+(-y)

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


Simplifying
9 = 4 + (-1y)

Solving
9 = 4 + (-1y)

Solving for variable 'y'.

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

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

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

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

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

Combine like terms: 4 + -9 = -5
y = -5

Simplifying
y = -5

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