42+x=7x

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Solution for 42+x=7x equation: 



42+x=7x

We move all terms to the left:

42+x-(7x)=0

We add all the numbers together, and all the variables

-6x+42=0

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

-6x=-42

x=-42/-6

x=+7

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