13-x=7.5

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Solution for 13-x=7.5 equation: 



13-x=7.5

We move all terms to the left:

13-x-(7.5)=0

We add all the numbers together, and all the variables

-1x+5.5=0

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

-x=-5.5

x=-5.5/-1

x=5+0.5/1

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