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0.9x+51x-7=2(2.5x-3)
We move all terms to the left:
0.9x+51x-7-(2(2.5x-3))=0
We add all the numbers together, and all the variables
51.9x-(2(2.5x-3))-7=0
We calculate terms in parentheses: -(2(2.5x-3)), so:We get rid of parentheses
2(2.5x-3)
We multiply parentheses
4x-6
Back to the equation:
-(4x-6)
51.9x-4x+6-7=0
We add all the numbers together, and all the variables
47.9x-1=0
We move all terms containing x to the left, all other terms to the right
47.9x=1
x=1/47.9
x=1/47.9
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