Question

evaluate 7r- 15/s when r =3 and s=5

Answer 1

Answer:

15| = 15 and |− 9| = 9

∴ 7 × |− 15| − |− 9| × 8 = 7 × 15 − 9 × 8

= 105 − 72

= 33

Hence, 7 × |− 15| − |− 9| × 8 = 33.