тонн??
<span>18,5%=18.5:100=0.185</span>
<span>38.5*0.185=7.1225<span>~7.1</span></span>
38,5*18,5% = 38,5*18,5/100 = 38,5*0,185 = 7,1225 ~ 7.1
1)324/9*4=144 - 1 число
25*7.6-2(5*7.6-3*0.76)-4(5+3*7.6-0.76)=190-2(38-2.28)-4(5+22.8-0.76)=190-2*35.7204*27.04=190-71.44-108.16=10.4