Question

Not sure if i understand but can someone help me understand by what its means of the problem?

Answer 1

Variable: b

Equation: $12b + $16 = $112

Solution: 8 books

Explanation:

$12b + $16 = $112

$12b + $16 - $16 = $112 - $16

$12b = $96

$12b ÷ $12 = $96 ÷ $12

b = 8

Hope that helps.