34:4=8 (ост.2)
15:6=2 (ост.3)
68:8=8 (ост.4)
19:2=9 (ост.1)
27:4=6 (ост.3)
75:9=8 (ост.3)
82:8=10 (ост.2)
29:6=4 (ост.5)
2:7=0 (ост.2)
4х+3(х-7)=5
4х+3х-21=5
7х=26
х=26:7
х=3.71
<span>а) 320 - (64 : 8 + 16) = 320 - (8 + 16) = 320 - 24 = 296
в) 98 - 72 : 9 - (35 + 55) : 3 = 98 - 8 - 90 : 3 = 90 - 30 = 60
д) 26 - (53 - 48) </span>· <span>4 - 4 = 26 - 5 </span>· 4 - 4 = 26 - 20 - 4 = 6 - 4 = 2
<span>ж) 66 - (65 - 47) : 6 + 3 = 66 - 18 : 6 + 3 = 66 - 3 + 3 = 66</span>