9x-4[x-3]-15x+8x+7x=72

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Solution for 9x-4[x-3]-15x+8x+7x=72 equation:


Simplifying
9x + -4[x + -3] + -15x + 8x + 7x = 72

Reorder the terms:
9x + -4[-3 + x] + -15x + 8x + 7x = 72
9x + [-3 * -4 + x * -4] + -15x + 8x + 7x = 72
9x + [12 + -4x] + -15x + 8x + 7x = 72

Reorder the terms:
12 + 9x + -4x + -15x + 8x + 7x = 72

Combine like terms: 9x + -4x = 5x
12 + 5x + -15x + 8x + 7x = 72

Combine like terms: 5x + -15x = -10x
12 + -10x + 8x + 7x = 72

Combine like terms: -10x + 8x = -2x
12 + -2x + 7x = 72

Combine like terms: -2x + 7x = 5x
12 + 5x = 72

Solving
12 + 5x = 72

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 5x = 72 + -12

Combine like terms: 12 + -12 = 0
0 + 5x = 72 + -12
5x = 72 + -12

Combine like terms: 72 + -12 = 60
5x = 60

Divide each side by '5'.
x = 12

Simplifying
x = 12

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