108/a=9
a=108/9=12
b/3=11
b=11*3=33
14*c=42
c=42/14=3
№1
а)0.872 · 6.3 = 5.4936
г)30.42 : 1.3 = 23.4
б) 1.6 · 7.625 = 12.2
д)0.702 : 0.05 = 14.04
в)0.045 · 0.1 = 0.0045
е)0.026 : 0.01 = 2.6
ж)0.964 · 7.4 = 7.1336
з)25.23 : 0.3 = 84.1
и)2.4 · 7.375 = 17.7
к)0.0918 : 0.017 = 5.4
л)0.72 · 0.01 = 0.0072
м)0.39 : 0.1 = 3.9
№2
а)296.2 - 2.7 · 6.6 + 6 : 0.15 = 318.38
1) 2.7 2) 6 3) 296.2 4) 278.38
6.6 0.15 17.82 40
17.82 40 278.38 318.38
б)398.6 - 3.8 · 7.7 + 3 : 0.06 = 419.34
1) 3.8 2) 3 3) 398.6 4) 369.34
7.7 0.06 29.26 50
29.26 50 369.34 419.34
108:а=9
а=108:9
а=12
проверка
108:12=9
9=9
б:3=11
б=11*3
б=33
проверка
33:3=11
11=11
14*с=42
с=42:14
с=3
проверка
14*3=42
42=42