42+(7x-1)=90

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Solution for 42+(7x-1)=90 equation: 



42+(7x-1)=90

We move all terms to the left:

42+(7x-1)-(90)=0

We add all the numbers together, and all the variables

(7x-1)-48=0

We get rid of parentheses

7x-1-48=0

We add all the numbers together, and all the variables

7x-49=0

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

7x=49

x=49/7

x=7

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