4x+15=8x-9

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


Simplifying
4x + 15 = 8x + -9

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

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

Solving
15 + 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.
15 + 4x + -8x = -9 + 8x + -8x

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

Combine like terms: 8x + -8x = 0
15 + -4x = -9 + 0
15 + -4x = -9

Add '-15' to each side of the equation.
15 + -15 + -4x = -9 + -15

Combine like terms: 15 + -15 = 0
0 + -4x = -9 + -15
-4x = -9 + -15

Combine like terms: -9 + -15 = -24
-4x = -24

Divide each side by '-4'.
x = 6

Simplifying
x = 6

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