21-2.5x=7.5

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Solution for 21-2.5x=7.5 equation: 



21-2.5x=7.5

We move all terms to the left:

21-2.5x-(7.5)=0

We add all the numbers together, and all the variables

-2.5x+13.5=0

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

-2.5x=-13.5

x=-13.5/-2.5

x=5+1/2.5

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