12.50-x=30

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Solution for 12.50-x=30 equation:



12.50-x=30
We move all terms to the left:
12.50-x-(30)=0
We add all the numbers together, and all the variables
-1x-17.5=0
We move all terms containing x to the left, all other terms to the right
-x=17.5
x=17.5/-1
x=-17+0.5/1

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