x+121=4x-20

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Solution for x+121=4x-20 equation:


Simplifying
x + 121 = 4x + -20

Reorder the terms:
121 + x = 4x + -20

Reorder the terms:
121 + x = -20 + 4x

Solving
121 + x = -20 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
121 + x + -4x = -20 + 4x + -4x

Combine like terms: x + -4x = -3x
121 + -3x = -20 + 4x + -4x

Combine like terms: 4x + -4x = 0
121 + -3x = -20 + 0
121 + -3x = -20

Add '-121' to each side of the equation.
121 + -121 + -3x = -20 + -121

Combine like terms: 121 + -121 = 0
0 + -3x = -20 + -121
-3x = -20 + -121

Combine like terms: -20 + -121 = -141
-3x = -141

Divide each side by '-3'.
x = 47

Simplifying
x = 47

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