9x-15-7x-21=

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Solution for 9x-15-7x-21= equation:


Simplifying
9x + -15 + -7x + -21 = 0

Reorder the terms:
-15 + -21 + 9x + -7x = 0

Combine like terms: -15 + -21 = -36
-36 + 9x + -7x = 0

Combine like terms: 9x + -7x = 2x
-36 + 2x = 0

Solving
-36 + 2x = 0

Solving for variable 'x'.

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

Add '36' to each side of the equation.
-36 + 36 + 2x = 0 + 36

Combine like terms: -36 + 36 = 0
0 + 2x = 0 + 36
2x = 0 + 36

Combine like terms: 0 + 36 = 36
2x = 36

Divide each side by '2'.
x = 18

Simplifying
x = 18

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