Объяснение:
5. 75/26 * (13/15) =75*13/26*15=5/2=2,5;
6. 1/(1 + 1/4)=1:5/4 =4/5=0.8;
7. 1/(1/33+1/12)=1 : 5/44=44/5=8 4/5=8.8;
8. (5/6+11/10)*24= (50/60+66/60)= 116/60*24= 29/15*24=232/5=46.4;
9. (19/25-7/13)*13/12=72/325*13/12=6/25=0.24;
10. (11/30-17/36):19/45= (66/180-85/180):19/45= -19/180*45/19=-1/4=-0.25.
Объяснение:
5. 75/26 * (13/15) =75*13/26*15=5/2=2,5;
6. 1/(1 + 1/4)=1:5/4 =4/5=0.8;
7. 1/(1/33+1/12)=1 : 5/44=44/5=8 4/5=8.8;
8. (5/6+11/10)*24= (50/60+66/60)= 116/60*24= 29/15*24=232/5=46.4;
9. (19/25-7/13)*13/12=72/325*13/12=6/25=0.24;
10. (11/30-17/36):19/45= (66/180-85/180):19/45= -19/180*45/19=-1/4=-0.25.