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a fost răspuns

3/5:1/25=
7/12:14/3=
[1-(8/35-2/15)x1intreg si 2/12]x18/40-4intregi si 4/5x(1/3-1/4)

Răspuns :

3/5:1/25=3/5×25/1=3/1×5/1=
15/1=15
7/12:14/3=7/12×3/14=1/4×1/2=1/8