X+21+X+17=180

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Solution for X+21+X+17=180 equation: 


Simplifying
X + 21 + X + 17 = 180

Reorder the terms:
21 + 17 + X + X = 180

Combine like terms: 21 + 17 = 38
38 + X + X = 180

Combine like terms: X + X = 2X
38 + 2X = 180

Solving
38 + 2X = 180

Solving for variable 'X'.

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

Add '-38' to each side of the equation.
38 + -38 + 2X = 180 + -38

Combine like terms: 38 + -38 = 0
0 + 2X = 180 + -38
2X = 180 + -38

Combine like terms: 180 + -38 = 142
2X = 142

Divide each side by '2'.
X = 71

Simplifying
X = 71

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