7(x=5)-1=90

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Solution for 7(x=5)-1=90 equation: 



7(x=5)-1=90

We move all terms to the left:

7(x-(5)-1)=0

We add all the numbers together, and all the variables

7(x-6)=0

We multiply parentheses

7x-42=0

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

7x=42

x=42/7

x=6

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