-x/3+21=7

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Solution for -x/3+21=7 equation: 



-x/3+21=7

We move all terms to the left:

-x/3+21-(7)=0

We add all the numbers together, and all the variables

-x/3+14=0

We multiply all the terms by the denominator


-x+14*3=0

We add all the numbers together, and all the variables

-1x+42=0

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

-x=-42

x=-42/-1

x=+42

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