0,75:5/9+2,5*2,5-1:11/9=
0,75:5/9=75/100*9/5=15/100*9=0,15*9=1,35
2,5*2/5=25/10*2/5=1
1:11/9=1*9/11=9/11
<span>1-9/11=2/11</span>
1,35+1-9/11=1,35+2/11=135/100+2/11=(1485+200)/1100=1,5318181
84 : 6 - (11 - 5) = 14 - 6 = 8
90 : 3 *2 +16 * 2 = 30 *2 + 32 = 60 + 32 = 92
(47 + 23) - 56 : 4 = 70 - 14 = 56
96 : 4 + 20*3 = 24 + 60 = 84
1) (714+267):7= 981:7=140(1 остаток)