40-3x=4+x

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


Simplifying
40 + -3x = 4 + x

Solving
40 + -3x = 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.
40 + -3x + -1x = 4 + x + -1x

Combine like terms: -3x + -1x = -4x
40 + -4x = 4 + x + -1x

Combine like terms: x + -1x = 0
40 + -4x = 4 + 0
40 + -4x = 4

Add '-40' to each side of the equation.
40 + -40 + -4x = 4 + -40

Combine like terms: 40 + -40 = 0
0 + -4x = 4 + -40
-4x = 4 + -40

Combine like terms: 4 + -40 = -36
-4x = -36

Divide each side by '-4'.
x = 9

Simplifying
x = 9

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