Question

Evaluate the expression when a= 4, b= - 2, and c= 7 - -> 5a - 9 (b - c)

Answer 1

`65`

Explanation:

Given the following question:


`5a-9(b-c)`
a = 4
b = 2
c = 7

In order to find the answer, we need to substitute the variables with the numbers given, and then solve using PEMDAS.


`5*4-9*(2-7)`

`2-7=-5`

`5*4-9*-5`

`5*4=20`

`20-9*-5`

`9*-5=-45`

`20--45`

`20+45=65`

`=65`

Hope this helps.