Question

4a-5b-7c+20 ; a=-2 b=3 c=4

Answer 1

Answer:

-31

Step-by-step explanation:

4a-5b-7c+20 ; a = -2 b = 3 c = 4

4(-2)-5(3)-7(4)+20

= -8 - 15 - 28 + 20

= 20-51

= -31 Answer

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