Question

Folosind proprietățile înmulțirii, calculați​

Answer 1

Răspuns:

a) (3/5×2/7)×21/18=6/35×21/18=1/5×3/3=1/5 .

b) 3/5×(2/7×21/18)=3/5×3/9=3/5×1/3=1/5 .

c) 3/5×2/7×21/18=1/5×2/1×3/6=1/5×2/1×1/2=1/5 .

d) (2/7×4/3)×(3/2×1/5)=8/21×3/10=4/7×1/5=4/35 .

e) 2/7×(4/3×3/2)×1/5=2/7×2/1×1/5=4/35

f) 2/7×4/3×3/2×1/5=1/7×4/3×3×1/5=1/7×4×1/5=4/35