3x+129=10x-11

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Solution for 3x+129=10x-11 equation:


Simplifying
3x + 129 = 10x + -11

Reorder the terms:
129 + 3x = 10x + -11

Reorder the terms:
129 + 3x = -11 + 10x

Solving
129 + 3x = -11 + 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.
129 + 3x + -10x = -11 + 10x + -10x

Combine like terms: 3x + -10x = -7x
129 + -7x = -11 + 10x + -10x

Combine like terms: 10x + -10x = 0
129 + -7x = -11 + 0
129 + -7x = -11

Add '-129' to each side of the equation.
129 + -129 + -7x = -11 + -129

Combine like terms: 129 + -129 = 0
0 + -7x = -11 + -129
-7x = -11 + -129

Combine like terms: -11 + -129 = -140
-7x = -140

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

Simplifying
x = 20

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