Question

c) a×b=80 b×c=48 b×(a-c)=?


d) a×b=36 b×c=24 2b×(a-c)=?

e)a×b=30 a×c =24 3a×(b-c)=?



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Answer 1

Răspuns:

c)

ab=80, bc=48

b*(a-c)=ab-bc=80-48=32

d)

ab=36, bc=24

2b(a-c)=2ab-2bc= 2*36-2*24=72-48=24

e)

ab=30, ac=24

3a(b-c)=3ab-3bc=3*30-3*24=90-72=18