7x-1=4x+3=90

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Solution for 7x-1=4x+3=90 equation: 



7x-1=4x+3=90

We move all terms to the left:

7x-1-(4x+3)=0

We get rid of parentheses

7x-4x-3-1=0

We add all the numbers together, and all the variables

3x-4=0

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

3x=4

x=4/3

x=1+1/3

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