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X=12.89-8(9-X)
We move all terms to the left:
X-(12.89-8(9-X))=0
We add all the numbers together, and all the variables
X-(12.89-8(-1X+9))=0
We calculate terms in parentheses: -(12.89-8(-1X+9)), so:We get rid of parentheses
12.89-8(-1X+9)
determiningTheFunctionDomain -8(-1X+9)+12.89
We multiply parentheses
8X-72+12.89
We add all the numbers together, and all the variables
8X-59.11
Back to the equation:
-(8X-59.11)
X-8X+59.11=0
We add all the numbers together, and all the variables
-7X+59.11=0
We move all terms containing X to the left, all other terms to the right
-7X=-59.11
X=-59.11/-7
X=8+2.8018018018018/6.3063063063063
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