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5(x+9)/4=4(x+9)/5
We move all terms to the left:
5(x+9)/4-(4(x+9)/5)=0
We calculate fractions
5x/()+(-(4(x+9)*4)/()=0
We calculate terms in parentheses: +(-(4(x+9)*4)/(), so:We get rid of parentheses
-(4(x+9)*4)/(
We multiply all the terms by the denominator
-(4(x+9)*4)
We calculate terms in parentheses: -(4(x+9)*4), so:We get rid of parentheses
4(x+9)*4
We multiply parentheses
16x+144
Back to the equation:
-(16x+144)
-16x-144
Back to the equation:
+(-16x-144)
5x/()-16x-144=0
We multiply all the terms by the denominator
5x-16x*()-144*()=0
We add all the numbers together, and all the variables
5x-16x*()=0
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