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1.28=x-72/5.7
We move all terms to the left:
1.28-(x-72/5.7)=0
We add all the numbers together, and all the variables
-(+x-72/5.7)+1.28=0
We get rid of parentheses
-x+1.28+72/5.7=0
We multiply all the terms by the denominator
-x*5.7+72+(1.28)*5.7=0
We add all the numbers together, and all the variables
-x*5.7+79.296=0
Wy multiply elements
-5.7x+79.296=0
We move all terms containing x to the left, all other terms to the right
-5.7x=-79.296
x=-79.296/-5.7
x=13+1/1.09699769053
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