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((63x)+65(100-x))/100=63.55
We move all terms to the left:
((63x)+65(100-x))/100-(63.55)=0
We add all the numbers together, and all the variables
(63x+65(-1x+100))/100-(63.55)=0
We add all the numbers together, and all the variables
(63x+65(-1x+100))/100-63.55=0
We multiply all the terms by the denominator
(63x+65(-1x+100))-(63.55)*100=0
We calculate terms in parentheses: +(63x+65(-1x+100)), so:We add all the numbers together, and all the variables
63x+65(-1x+100)
We multiply parentheses
63x-65x+6500
We add all the numbers together, and all the variables
-2x+6500
Back to the equation:
+(-2x+6500)
(-2x+6500)-6355=0
We get rid of parentheses
-2x+6500-6355=0
We add all the numbers together, and all the variables
-2x+145=0
We move all terms containing x to the left, all other terms to the right
-2x=-145
x=-145/-2
x=72+1/2
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