y-1=-1(x-(-9))

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


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

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

Multiply -1 * -9
-1 + y = -1(x + 9)

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

Solving
-1 + y = -9 + -1x

Solving for variable 'y'.

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

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

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

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

Simplifying
y = -8 + -1x

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