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2800=290(1.21)x
We move all terms to the left:
2800-(290(1.21)x)=0
We calculate terms in parentheses: -(290(1.21)x), so:We add all the numbers together, and all the variables
290(1.21)x
We multiply parentheses
350.9x
Back to the equation:
-(350.9x)
-(+350.9x)+2800=0
We get rid of parentheses
-350.9x+2800=0
We move all terms containing x to the left, all other terms to the right
-350.9x=-2800
x=-2800/-350.9
x=7+44.636363636362/45.571428571427
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