3(20x+75)=645

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Solution for 3(20x+75)=645 equation: 



3(20x+75)=645

We move all terms to the left:

3(20x+75)-(645)=0

We multiply parentheses

60x+225-645=0

We add all the numbers together, and all the variables

60x-420=0

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

60x=420

x=420/60

x=7

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