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49=31-2(x-4)
We move all terms to the left:
49-(31-2(x-4))=0
We calculate terms in parentheses: -(31-2(x-4)), so:We get rid of parentheses
31-2(x-4)
determiningTheFunctionDomain -2(x-4)+31
We multiply parentheses
-2x+8+31
We add all the numbers together, and all the variables
-2x+39
Back to the equation:
-(-2x+39)
2x-39+49=0
We add all the numbers together, and all the variables
2x+10=0
We move all terms containing x to the left, all other terms to the right
2x=-10
x=-10/2
x=-5
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