3x+6(x-20)=420

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Solution for 3x+6(x-20)=420 equation: 



3x+6(x-20)=420

We move all terms to the left:

3x+6(x-20)-(420)=0

We multiply parentheses

3x+6x-120-420=0

We add all the numbers together, and all the variables

9x-540=0

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

9x=540

x=540/9

x=60

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