7X+31+21X-19=180

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Solution for 7X+31+21X-19=180 equation: 


Simplifying
7X + 31 + 21X + -19 = 180

Reorder the terms:
31 + -19 + 7X + 21X = 180

Combine like terms: 31 + -19 = 12
12 + 7X + 21X = 180

Combine like terms: 7X + 21X = 28X
12 + 28X = 180

Solving
12 + 28X = 180

Solving for variable 'X'.

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

Add '-12' to each side of the equation.
12 + -12 + 28X = 180 + -12

Combine like terms: 12 + -12 = 0
0 + 28X = 180 + -12
28X = 180 + -12

Combine like terms: 180 + -12 = 168
28X = 168

Divide each side by '28'.
X = 6

Simplifying
X = 6

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