3*40-x=4+x

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Solution for 3*40-x=4+x equation:


Simplifying
3 * 40 + -1x = 4 + x

Multiply 3 * 40
120 + -1x = 4 + x

Solving
120 + -1x = 4 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
120 + -1x + -1x = 4 + x + -1x

Combine like terms: -1x + -1x = -2x
120 + -2x = 4 + x + -1x

Combine like terms: x + -1x = 0
120 + -2x = 4 + 0
120 + -2x = 4

Add '-120' to each side of the equation.
120 + -120 + -2x = 4 + -120

Combine like terms: 120 + -120 = 0
0 + -2x = 4 + -120
-2x = 4 + -120

Combine like terms: 4 + -120 = -116
-2x = -116

Divide each side by '-2'.
x = 58

Simplifying
x = 58

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