15-4(x-12)=8x-9

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Solution for 15-4(x-12)=8x-9 equation:


Simplifying
15 + -4(x + -12) = 8x + -9

Reorder the terms:
15 + -4(-12 + x) = 8x + -9
15 + (-12 * -4 + x * -4) = 8x + -9
15 + (48 + -4x) = 8x + -9

Combine like terms: 15 + 48 = 63
63 + -4x = 8x + -9

Reorder the terms:
63 + -4x = -9 + 8x

Solving
63 + -4x = -9 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
63 + -4x + -8x = -9 + 8x + -8x

Combine like terms: -4x + -8x = -12x
63 + -12x = -9 + 8x + -8x

Combine like terms: 8x + -8x = 0
63 + -12x = -9 + 0
63 + -12x = -9

Add '-63' to each side of the equation.
63 + -63 + -12x = -9 + -63

Combine like terms: 63 + -63 = 0
0 + -12x = -9 + -63
-12x = -9 + -63

Combine like terms: -9 + -63 = -72
-12x = -72

Divide each side by '-12'.
x = 6

Simplifying
x = 6

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