7.8:2.6-0.5×1.4=2.3
1) 7.8:2.6=3
2) 0.5×1.4=0.7
3) 3-0.7=2.3
<span>(х-28)*3-15=96
3х - 84 - 15 = 96
3х= 195
х= 195 : 3
х= 65
Ответ: 65</span>
А. 10/20- 5/20 + 8/20 = 13/20
Б. 6/8+ - 4/8 + 7/8 = 1.125
В. 10/12- 8/12 + 3/12 = 5/12
Решение............................