3x+40+x-7=117

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Solution for 3x+40+x-7=117 equation: 


Simplifying
3x + 40 + x + -7 = 117

Reorder the terms:
40 + -7 + 3x + x = 117

Combine like terms: 40 + -7 = 33
33 + 3x + x = 117

Combine like terms: 3x + x = 4x
33 + 4x = 117

Solving
33 + 4x = 117

Solving for variable 'x'.

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

Add '-33' to each side of the equation.
33 + -33 + 4x = 117 + -33

Combine like terms: 33 + -33 = 0
0 + 4x = 117 + -33
4x = 117 + -33

Combine like terms: 117 + -33 = 84
4x = 84

Divide each side by '4'.
x = 21

Simplifying
x = 21

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