Question

3. Evaluate 7w – 52 + 9 + w) when w = 4 and z = 5​

Answer 1

45

Explanation:

Given

7w - 5z + 9(
`(2)/(3)` + w) ← distribute parenthesis

= 7w - 5z + 6 + 9w ← collect like terms

= 16w - 5z + 6 ← substitute w = 4, z = 5 into the expression

= 16(4) - 5(5) + 6

= 64 - 25 + 6

= 45

Answer 2

45

Explanation:

7 x 4 - 5 x 5 + 9 (2/3 + 4)

28 - 25 + 9 x 14/3

28 -25 + 3 x 14

28 - 25 + 42

45