(x-40)+3x=180

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Solution for (x-40)+3x=180 equation:


Simplifying
(x + -40) + 3x = 180

Reorder the terms:
(-40 + x) + 3x = 180

Remove parenthesis around (-40 + x)
-40 + x + 3x = 180

Combine like terms: x + 3x = 4x
-40 + 4x = 180

Solving
-40 + 4x = 180

Solving for variable 'x'.

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

Add '40' to each side of the equation.
-40 + 40 + 4x = 180 + 40

Combine like terms: -40 + 40 = 0
0 + 4x = 180 + 40
4x = 180 + 40

Combine like terms: 180 + 40 = 220
4x = 220

Divide each side by '4'.
x = 55

Simplifying
x = 55

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