70-100%
x-47%
70*47=100x
3290=100x
x=3290:100
x=32,9 осталось 32, 9 литров керосина
1) 745пмж375=279375
2) 5845:5=1169
3)1169пмж5=5845
4) 5845+279375=285220
1)3*(27+99:3)=180
99:3=33
27+33=60
3*60=180
2)27356-160*3 = 26876
160 * 3 = 480
27356 - 480 = 26876
3) 6450:6 = 1075
4)<span>4107*7 = </span>28749