3(x+20)-4(x-20)=305

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Solution for 3(x+20)-4(x-20)=305 equation: 



3(x+20)-4(x-20)=305

We move all terms to the left:

3(x+20)-4(x-20)-(305)=0

We multiply parentheses

3x-4x+60+80-305=0

We add all the numbers together, and all the variables

-1x-165=0

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

-x=165

x=165/-1

x=-165

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