(3x+4)+(x-20)+(x)=180

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Solution for (3x+4)+(x-20)+(x)=180 equation: 


Simplifying
(3x + 4) + (x + -20) + (x) = 180

Reorder the terms:
(4 + 3x) + (x + -20) + (x) = 180

Remove parenthesis around (4 + 3x)
4 + 3x + (x + -20) + (x) = 180

Reorder the terms:
4 + 3x + (-20 + x) + (x) = 180

Remove parenthesis around (-20 + x)
4 + 3x + -20 + x + (x) = 180
4 + 3x + -20 + x + x = 180

Reorder the terms:
4 + -20 + 3x + x + x = 180

Combine like terms: 4 + -20 = -16
-16 + 3x + x + x = 180

Combine like terms: 3x + x = 4x
-16 + 4x + x = 180

Combine like terms: 4x + x = 5x
-16 + 5x = 180

Solving
-16 + 5x = 180

Solving for variable 'x'.

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

Add '16' to each side of the equation.
-16 + 16 + 5x = 180 + 16

Combine like terms: -16 + 16 = 0
0 + 5x = 180 + 16
5x = 180 + 16

Combine like terms: 180 + 16 = 196
5x = 196

Divide each side by '5'.
x = 39.2

Simplifying
x = 39.2

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