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-4x+3-7=2.5
We move all terms to the left:
-4x+3-7-(2.5)=0
We add all the numbers together, and all the variables
-4x-6.5=0
We move all terms containing x to the left, all other terms to the right
-4x=6.5
x=6.5/-4
x=-1+1/1.6
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