21-7x=70

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Solution for 21-7x=70 equation: 



21-7x=70

We move all terms to the left:

21-7x-(70)=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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