x+2x+(x-7)=77

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Solution for x+2x+(x-7)=77 equation:


x+2x+(x-7)=77

We simplify the equation to the form, which is simple to understand 
x+2x+(x-7)=77

Remove unnecessary parentheses
+x+2x+x-7=+77

We move all terms containing x to the left and all other terms to the right. 
+1x+2x+1x=+77+7

We simplify left and right side of the equation. 
+4x=+84

We divide both sides of the equation by 4 to get x. 
x=21

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