1x+90+(2x+21)=180

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Solution for 1x+90+(2x+21)=180 equation:


Simplifying
1x + 90 + (2x + 21) = 180

Reorder the terms:
1x + 90 + (21 + 2x) = 180

Remove parenthesis around (21 + 2x)
1x + 90 + 21 + 2x = 180

Reorder the terms:
90 + 21 + 1x + 2x = 180

Combine like terms: 90 + 21 = 111
111 + 1x + 2x = 180

Combine like terms: 1x + 2x = 3x
111 + 3x = 180

Solving
111 + 3x = 180

Solving for variable 'x'.

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

Add '-111' to each side of the equation.
111 + -111 + 3x = 180 + -111

Combine like terms: 111 + -111 = 0
0 + 3x = 180 + -111
3x = 180 + -111

Combine like terms: 180 + -111 = 69
3x = 69

Divide each side by '3'.
x = 23

Simplifying
x = 23

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