9x-(5x+9)=2x-21

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Solution for 9x-(5x+9)=2x-21 equation:


Simplifying
9x + -1(5x + 9) = 2x + -21

Reorder the terms:
9x + -1(9 + 5x) = 2x + -21
9x + (9 * -1 + 5x * -1) = 2x + -21
9x + (-9 + -5x) = 2x + -21

Reorder the terms:
-9 + 9x + -5x = 2x + -21

Combine like terms: 9x + -5x = 4x
-9 + 4x = 2x + -21

Reorder the terms:
-9 + 4x = -21 + 2x

Solving
-9 + 4x = -21 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
-9 + 4x + -2x = -21 + 2x + -2x

Combine like terms: 4x + -2x = 2x
-9 + 2x = -21 + 2x + -2x

Combine like terms: 2x + -2x = 0
-9 + 2x = -21 + 0
-9 + 2x = -21

Add '9' to each side of the equation.
-9 + 9 + 2x = -21 + 9

Combine like terms: -9 + 9 = 0
0 + 2x = -21 + 9
2x = -21 + 9

Combine like terms: -21 + 9 = -12
2x = -12

Divide each side by '2'.
x = -6

Simplifying
x = -6

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