15x+9(9-x)=3x-18

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Solution for 15x+9(9-x)=3x-18 equation:


Simplifying
15x + 9(9 + -1x) = 3x + -18
15x + (9 * 9 + -1x * 9) = 3x + -18
15x + (81 + -9x) = 3x + -18

Reorder the terms:
81 + 15x + -9x = 3x + -18

Combine like terms: 15x + -9x = 6x
81 + 6x = 3x + -18

Reorder the terms:
81 + 6x = -18 + 3x

Solving
81 + 6x = -18 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
81 + 6x + -3x = -18 + 3x + -3x

Combine like terms: 6x + -3x = 3x
81 + 3x = -18 + 3x + -3x

Combine like terms: 3x + -3x = 0
81 + 3x = -18 + 0
81 + 3x = -18

Add '-81' to each side of the equation.
81 + -81 + 3x = -18 + -81

Combine like terms: 81 + -81 = 0
0 + 3x = -18 + -81
3x = -18 + -81

Combine like terms: -18 + -81 = -99
3x = -99

Divide each side by '3'.
x = -33

Simplifying
x = -33

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