Question

Evaluate 9 x 8 = (10 x 8) - ( blank x 8) =80 - blank = blank

Answer 1

see below

Explanation:

9 x 8 = (10 x 8) - ( blank x 8) =80 - blank = blank

We are replacing 9 with 10 minus something

9 = 10 -1

9 x 8 = (10 x 8) - ( 1 x 8)

80 - 8

72