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135-3x=115-2.5(40)
We move all terms to the left:
135-3x-(115-2.5(40))=0
We add all the numbers together, and all the variables
-3x+135-(112.46)=0
We add all the numbers together, and all the variables
-3x+22.54=0
We move all terms containing x to the left, all other terms to the right
-3x=-22.54
x=-22.54/-3
x=7+1/1.9480519480519
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