=(6x-8)-15x+21

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Solution for =(6x-8)-15x+21 equation:


Simplifying
0 = (6x + -8) + -15x + 21

Reorder the terms:
0 = (-8 + 6x) + -15x + 21

Remove parenthesis around (-8 + 6x)
0 = -8 + 6x + -15x + 21

Reorder the terms:
0 = -8 + 21 + 6x + -15x

Combine like terms: -8 + 21 = 13
0 = 13 + 6x + -15x

Combine like terms: 6x + -15x = -9x
0 = 13 + -9x

Solving
0 = 13 + -9x

Solving for variable 'x'.

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

Add '9x' to each side of the equation.
0 + 9x = 13 + -9x + 9x
Remove the zero:
9x = 13 + -9x + 9x

Combine like terms: -9x + 9x = 0
9x = 13 + 0
9x = 13

Divide each side by '9'.
x = 1.444444444

Simplifying
x = 1.444444444

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