(-2x-9)-(7x+9)=

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Solution for (-2x-9)-(7x+9)= equation:


Simplifying
(-2x + -9) + -1(7x + 9) = 0

Reorder the terms:
(-9 + -2x) + -1(7x + 9) = 0

Remove parenthesis around (-9 + -2x)
-9 + -2x + -1(7x + 9) = 0

Reorder the terms:
-9 + -2x + -1(9 + 7x) = 0
-9 + -2x + (9 * -1 + 7x * -1) = 0
-9 + -2x + (-9 + -7x) = 0

Reorder the terms:
-9 + -9 + -2x + -7x = 0

Combine like terms: -9 + -9 = -18
-18 + -2x + -7x = 0

Combine like terms: -2x + -7x = -9x
-18 + -9x = 0

Solving
-18 + -9x = 0

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + -9x = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -9x = 0 + 18
-9x = 0 + 18

Combine like terms: 0 + 18 = 18
-9x = 18

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

Simplifying
x = -2

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