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8-2/5(25-10a)=3/7(14a-21)
We move all terms to the left:
8-2/5(25-10a)-(3/7(14a-21))=0
Domain of the equation: 5(25-10a)!=0
a∈R
Domain of the equation: 7(14a-21))!=0We add all the numbers together, and all the variables
a∈R
-2/5(-10a+25)-(3/7(14a-21))+8=0
We calculate fractions
(-14a1/(5(-10a+25)*7(14a-21)))+(-15a0/(5(-10a+25)*7(14a-21)))+8=0
We calculate terms in parentheses: +(-14a1/(5(-10a+25)*7(14a-21))), so:
-14a1/(5(-10a+25)*7(14a-21))
We multiply all the terms by the denominator
-14a1
We add all the numbers together, and all the variables
-14a
Back to the equation:
+(-14a)
We calculate terms in parentheses: +(-15a0/(5(-10a+25)*7(14a-21))), so:We get rid of parentheses
-15a0/(5(-10a+25)*7(14a-21))
We multiply all the terms by the denominator
-15a0
We add all the numbers together, and all the variables
-15a
Back to the equation:
+(-15a)
-14a-15a+8=0
We add all the numbers together, and all the variables
-29a+8=0
We move all terms containing a to the left, all other terms to the right
-29a=-8
a=-8/-29
a=8/29
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