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4/5(15x-25)-1=3/7(21x-7x)
We move all terms to the left:
4/5(15x-25)-1-(3/7(21x-7x))=0
Domain of the equation: 5(15x-25)!=0
x∈R
Domain of the equation: 7(21x-7x))!=0We add all the numbers together, and all the variables
x∈R
4/5(15x-25)-(3/7(+14x))-1=0
We calculate fractions
(28x(+)/(5(15x-25)*7(+14x)))+(-15x1/(5(15x-25)*7(+14x)))-1=0
We calculate terms in parentheses: +(28x(+)/(5(15x-25)*7(+14x))), so:
28x(+)/(5(15x-25)*7(+14x))
We add all the numbers together, and all the variables
28x0/(5(15x-25)*7(+14x))
We multiply all the terms by the denominator
28x0
We add all the numbers together, and all the variables
28x
Back to the equation:
+(28x)
We calculate terms in parentheses: +(-15x1/(5(15x-25)*7(+14x))), so:We get rid of parentheses
-15x1/(5(15x-25)*7(+14x))
We multiply all the terms by the denominator
-15x1
We add all the numbers together, and all the variables
-15x
Back to the equation:
+(-15x)
28x-15x-1=0
We add all the numbers together, and all the variables
13x-1=0
We move all terms containing x to the left, all other terms to the right
13x=1
x=1/13
x=1/13
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