7x-9(x-1)=-9

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Solution for 7x-9(x-1)=-9 equation:


Simplifying
7x + -9(x + -1) = -9

Reorder the terms:
7x + -9(-1 + x) = -9
7x + (-1 * -9 + x * -9) = -9
7x + (9 + -9x) = -9

Reorder the terms:
9 + 7x + -9x = -9

Combine like terms: 7x + -9x = -2x
9 + -2x = -9

Solving
9 + -2x = -9

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + -2x = -9 + -9

Combine like terms: 9 + -9 = 0
0 + -2x = -9 + -9
-2x = -9 + -9

Combine like terms: -9 + -9 = -18
-2x = -18

Divide each side by '-2'.
x = 9

Simplifying
x = 9

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