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(10x-3+84=21x+4.x)
We move all terms to the left:
(10x-3+84-(21x+4.x))=0
We add all the numbers together, and all the variables
(10x-3+84-(+25x))=0
We calculate terms in parentheses: +(10x-3+84-(+25x)), so:We get rid of parentheses
10x-3+84-(+25x)
determiningTheFunctionDomain 10x-(+25x)-3+84
We add all the numbers together, and all the variables
10x-(+25x)+81
We get rid of parentheses
10x-25x+81
We add all the numbers together, and all the variables
-15x+81
Back to the equation:
+(-15x+81)
-15x+81=0
We move all terms containing x to the left, all other terms to the right
-15x=-81
x=-81/-15
x=5+2/5
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