va rog sau 20 puncte d
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Răspuns:
Explicație pas cu pas:
1.d. 3/7x777=111x3=333
2.d. 5/12x18/5=3/2=1si1/2
3.d. 12/100x35=12/20x7=(3x7)/5=21/5=4si1/5
4.d. 7/100x500 km=7x5=35 km