90-x=3/7

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Solution for 90-x=3/7 equation: 



90-x=3/7

We move all terms to the left:

90-x-(3/7)=0

We add all the numbers together, and all the variables

-x+90-(+3/7)=0

We add all the numbers together, and all the variables

-1x+90-(+3/7)=0

We get rid of parentheses

-1x+90-3/7=0

We multiply all the terms by the denominator


-1x*7-3+90*7=0

We add all the numbers together, and all the variables

-1x*7+627=0

Wy multiply elements

-7x+627=0

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

-7x=-627

x=-627/-7

x=89+4/7

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