Question

8×(a-2)+9=89


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Answer 1

8×(a-2)+9=89

8 × (a - 2) = 89 - 9

8 × (a - 2) = 80

a - 2 = 80 : 8

a - 2 = 10

a = 10 + 2

a = 12

Answer 2

8•(a-2)+9=89

8•(a-2)=89-9=80

$a - 2 = \frac{80}{8} = 10$

a=10+2=12