121-4x=3x+15

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Solution for 121-4x=3x+15 equation:


Simplifying
121 + -4x = 3x + 15

Reorder the terms:
121 + -4x = 15 + 3x

Solving
121 + -4x = 15 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
121 + -4x + -3x = 15 + 3x + -3x

Combine like terms: -4x + -3x = -7x
121 + -7x = 15 + 3x + -3x

Combine like terms: 3x + -3x = 0
121 + -7x = 15 + 0
121 + -7x = 15

Add '-121' to each side of the equation.
121 + -121 + -7x = 15 + -121

Combine like terms: 121 + -121 = 0
0 + -7x = 15 + -121
-7x = 15 + -121

Combine like terms: 15 + -121 = -106
-7x = -106

Divide each side by '-7'.
x = 15.14285714

Simplifying
x = 15.14285714

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