5(21-2x)+9x=9(13-x)-4x

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Solution for 5(21-2x)+9x=9(13-x)-4x equation:


Simplifying
5(21 + -2x) + 9x = 9(13 + -1x) + -4x
(21 * 5 + -2x * 5) + 9x = 9(13 + -1x) + -4x
(105 + -10x) + 9x = 9(13 + -1x) + -4x

Combine like terms: -10x + 9x = -1x
105 + -1x = 9(13 + -1x) + -4x
105 + -1x = (13 * 9 + -1x * 9) + -4x
105 + -1x = (117 + -9x) + -4x

Combine like terms: -9x + -4x = -13x
105 + -1x = 117 + -13x

Solving
105 + -1x = 117 + -13x

Solving for variable 'x'.

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

Add '13x' to each side of the equation.
105 + -1x + 13x = 117 + -13x + 13x

Combine like terms: -1x + 13x = 12x
105 + 12x = 117 + -13x + 13x

Combine like terms: -13x + 13x = 0
105 + 12x = 117 + 0
105 + 12x = 117

Add '-105' to each side of the equation.
105 + -105 + 12x = 117 + -105

Combine like terms: 105 + -105 = 0
0 + 12x = 117 + -105
12x = 117 + -105

Combine like terms: 117 + -105 = 12
12x = 12

Divide each side by '12'.
x = 1

Simplifying
x = 1

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