x+(6+2x)=780

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Solution for x+(6+2x)=780 equation: 



x+(6+2x)=780

We move all terms to the left:

x+(6+2x)-(780)=0

We add all the numbers together, and all the variables

x+(2x+6)-780=0

We get rid of parentheses

x+2x+6-780=0

We add all the numbers together, and all the variables

3x-774=0

We move all terms containing x to the left, all other terms to the right

3x=774

x=774/3

x=258

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