71=17-9(6+a)

Solution for 71=17-9(6+a) equation:

71=17-9(6+a)

We move all terms to the left:

71-(17-9(6+a))=0

We add all the numbers together, and all the variables

-(17-9(a+6))+71=0


We calculate terms in parentheses: -(17-9(a+6)), so:

17-9(a+6)

determiningTheFunctionDomain
-9(a+6)+17

We multiply parentheses

-9a-54+17

We add all the numbers together, and all the variables

-9a-37

Back to the equation:

-(-9a-37)


We get rid of parentheses

9a+37+71=0

We add all the numbers together, and all the variables

9a+108=0

We move all terms containing a to the left, all other terms to the right

9a=-108

a=-108/9

a=-12