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31=2+4(x-7)+3
We move all terms to the left:
31-(2+4(x-7)+3)=0
We calculate terms in parentheses: -(2+4(x-7)+3), so:We get rid of parentheses
2+4(x-7)+3
determiningTheFunctionDomain 4(x-7)+2+3
We add all the numbers together, and all the variables
4(x-7)+5
We multiply parentheses
4x-28+5
We add all the numbers together, and all the variables
4x-23
Back to the equation:
-(4x-23)
-4x+23+31=0
We add all the numbers together, and all the variables
-4x+54=0
We move all terms containing x to the left, all other terms to the right
-4x=-54
x=-54/-4
x=13+1/2
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