121-3x=4x+16

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Solution for 121-3x=4x+16 equation:


Simplifying
121 + -3x = 4x + 16

Reorder the terms:
121 + -3x = 16 + 4x

Solving
121 + -3x = 16 + 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 + -3x + -4x = 16 + 4x + -4x

Combine like terms: -3x + -4x = -7x
121 + -7x = 16 + 4x + -4x

Combine like terms: 4x + -4x = 0
121 + -7x = 16 + 0
121 + -7x = 16

Add '-121' to each side of the equation.
121 + -121 + -7x = 16 + -121

Combine like terms: 121 + -121 = 0
0 + -7x = 16 + -121
-7x = 16 + -121

Combine like terms: 16 + -121 = -105
-7x = -105

Divide each side by '-7'.
x = 15

Simplifying
x = 15

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