3x+131=10x-9

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Solution for 3x+131=10x-9 equation:


Simplifying
3x + 131 = 10x + -9

Reorder the terms:
131 + 3x = 10x + -9

Reorder the terms:
131 + 3x = -9 + 10x

Solving
131 + 3x = -9 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
131 + 3x + -10x = -9 + 10x + -10x

Combine like terms: 3x + -10x = -7x
131 + -7x = -9 + 10x + -10x

Combine like terms: 10x + -10x = 0
131 + -7x = -9 + 0
131 + -7x = -9

Add '-131' to each side of the equation.
131 + -131 + -7x = -9 + -131

Combine like terms: 131 + -131 = 0
0 + -7x = -9 + -131
-7x = -9 + -131

Combine like terms: -9 + -131 = -140
-7x = -140

Divide each side by '-7'.
x = 20

Simplifying
x = 20

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