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2.6(x+4)=-5(7-3.2x)
We move all terms to the left:
2.6(x+4)-(-5(7-3.2x))=0
We add all the numbers together, and all the variables
2.6(x+4)-(-5(-3.2x+7))=0
We multiply parentheses
2.6x-(-5(-3.2x+7))+10.4=0
We calculate terms in parentheses: -(-5(-3.2x+7)), so:We get rid of parentheses
-5(-3.2x+7)
We multiply parentheses
15x-35
Back to the equation:
-(15x-35)
2.6x-15x+35+10.4=0
We add all the numbers together, and all the variables
-12.4x+45.4=0
We move all terms containing x to the left, all other terms to the right
-12.4x=-45.4
x=-45.4/-12.4
x=3+1.952380952381/2.952380952381
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