x+2x+21+90=180

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Solution for x+2x+21+90=180 equation:


x+2x+21+90=180

We simplify the equation to the form, which is simple to understand 
x+2x+21+90=180

We move all terms containing x to the left and all other terms to the right. 
+1x+2x=+180-21-90

We simplify left and right side of the equation. 
+3x=+69

We divide both sides of the equation by 3 to get x. 
x=23

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