3(7x+5)=78

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Solution for 3(7x+5)=78 equation: 



3(7x+5)=78

We move all terms to the left:

3(7x+5)-(78)=0

We multiply parentheses

21x+15-78=0

We add all the numbers together, and all the variables

21x-63=0

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

21x=63

x=63/21

x=3

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