2 years ago

Evaluate and simplify

Mathematics

1 answer:

nekit [7.7K]2 years ago

6 0

Answer:

5r +7s -3(r+s) + 4 = 5r +7s - 3r -3s +4 = 2r +4s +4 = 2(r +2s +2)

when sub r=2, s=3,

2(2+2(3) +2) = 20

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