7x+1=90-40

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Solution for 7x+1=90-40 equation: 



7x+1=90-40

We move all terms to the left:

7x+1-(90-40)=0

We add all the numbers together, and all the variables

7x+1-50=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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