y+9=-1(x-8)

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Solution for y+9=-1(x-8) equation: 


Simplifying
y + 9 = -1(x + -8)

Reorder the terms:
9 + y = -1(x + -8)

Reorder the terms:
9 + y = -1(-8 + x)
9 + y = (-8 * -1 + x * -1)
9 + y = (8 + -1x)

Solving
9 + y = 8 + -1x

Solving for variable 'y'.

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

Add '-9' to each side of the equation.
9 + -9 + y = 8 + -9 + -1x

Combine like terms: 9 + -9 = 0
0 + y = 8 + -9 + -1x
y = 8 + -9 + -1x

Combine like terms: 8 + -9 = -1
y = -1 + -1x

Simplifying
y = -1 + -1x

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