Решите по действиям: а) (21.2544: 0.9+1.02х3.2): 5.6= б) 4.36: (3.15+2.3)+(0.792-0.78)х350= в) (3.91: 2.3х5.4-4.03)х2.4= г) 6.93: (0.028+0.36х4.2)-3.5=

А) 21.2544:0.9=23.616
1.02Х3.2=3.264
23.616+3.264=26.88
26.88:5.6=4.8
б) 3.15+2.3=5.45
0.792-0.78=0.012
4.36:5.45=0.8
0.012Х350=4.2
0.8+4.2=5
в) 3.91:2.3=1.7
1.7Х5.4=9.18
9.18-4.03=5.15
5.15Х2.4=12.36
г) 0.36Х4.2=1.512
0.028+1.512=1.54
6.93:1.54=4.5
4.5-3.5=1