-x/7=20

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Solution for -x/7=20 equation: 



-x/7=20

We move all terms to the left:

-x/7-(20)=0

We multiply all the terms by the denominator


-x-20*7=0

We add all the numbers together, and all the variables

-1x-140=0

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

-x=140

x=140/-1

x=-140

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