Răspuns:
10/15=2/3
15/45=3/9
5a/10x=50/100=10/20
10a+10b/25x+25y=100+100/250+250=200/500=40/100
2^2×5/3×5=4×5/3×5=20/15=4/3
Sper că te-am ajutat!
