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Neporo4naja [7]
2 years ago
11

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

Mathematics
1 answer:
ollegr [7]2 years ago
8 0

Answer:

65

Step-by-step 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\times4-9\times(2-7)
2-7=-5
5\times4-9\times-5
5\times4=20
20-9\times-5
9\times-5=-45
20--45
20+45=65
=65

Hope this helps.

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