42=7x+45

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Solution for 42=7x+45 equation: 



42=7x+45

We move all terms to the left:

42-(7x+45)=0

We get rid of parentheses

-7x-45+42=0

We add all the numbers together, and all the variables

-7x-3=0

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

-7x=3

x=3/-7

x=-3/7

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