8(x+9)-4(4x-2)=15

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Solution for 8(x+9)-4(4x-2)=15 equation:


Simplifying
8(x + 9) + -4(4x + -2) = 15

Reorder the terms:
8(9 + x) + -4(4x + -2) = 15
(9 * 8 + x * 8) + -4(4x + -2) = 15
(72 + 8x) + -4(4x + -2) = 15

Reorder the terms:
72 + 8x + -4(-2 + 4x) = 15
72 + 8x + (-2 * -4 + 4x * -4) = 15
72 + 8x + (8 + -16x) = 15

Reorder the terms:
72 + 8 + 8x + -16x = 15

Combine like terms: 72 + 8 = 80
80 + 8x + -16x = 15

Combine like terms: 8x + -16x = -8x
80 + -8x = 15

Solving
80 + -8x = 15

Solving for variable 'x'.

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

Add '-80' to each side of the equation.
80 + -80 + -8x = 15 + -80

Combine like terms: 80 + -80 = 0
0 + -8x = 15 + -80
-8x = 15 + -80

Combine like terms: 15 + -80 = -65
-8x = -65

Divide each side by '-8'.
x = 8.125

Simplifying
x = 8.125

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