1. 4.5:3.25=36:26;
4.5*26=3.25*36;
117=117;
2. 3:7.5=2.5:6.25;
3*6.25=7.5*2.5;
18.75=18.75
3. 2.25:9=1:39;
2.25*39=9*1;
87.75≠9.
4.0.35:0.6=0.106:0.18;
0.35*0.18=0.6*0.106;
0.063≠0.0636.
5.18:3=30:5; {сокращаем}
6:1=6:1;
6=6.
6.15:1.8=2.7:0.09; {сокращаем}
25:3=30:1;
25≠90.