3x+9=8x-16

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Solution for 3x+9=8x-16 equation:


Simplifying
3x + 9 = 8x + -16

Reorder the terms:
9 + 3x = 8x + -16

Reorder the terms:
9 + 3x = -16 + 8x

Solving
9 + 3x = -16 + 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.
9 + 3x + -8x = -16 + 8x + -8x

Combine like terms: 3x + -8x = -5x
9 + -5x = -16 + 8x + -8x

Combine like terms: 8x + -8x = 0
9 + -5x = -16 + 0
9 + -5x = -16

Add '-9' to each side of the equation.
9 + -9 + -5x = -16 + -9

Combine like terms: 9 + -9 = 0
0 + -5x = -16 + -9
-5x = -16 + -9

Combine like terms: -16 + -9 = -25
-5x = -25

Divide each side by '-5'.
x = 5

Simplifying
x = 5

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