<span>4,36 : (3,15 + 2,3) + (0,792 - 0,78) · 350 = ?
1) 3.15 + 2.3 = 5.45
2) 4.36 : 5.45 = 0.8
3) 0.792 - 0.78 = 0.012
4) 0.012 · 350 = 4.2
5) 0.8 + 4.2 = 5
Ответ: 5
</span>
51*0.8=3.4х
3*08=0.2ч
2.4=0.2х
х=12
2.
4\х=2.5\6
2.5х=4*6
2.5х=24
х=9.6
-3,25=-3 25/100= - 3 1/4. Дробная часть - 1/4
- 5 4/5 + 4 2/3 = - 29/5 + 14/3 = - 29*3 / 5*3 + 14*5 / 3*5 = - 87/15 + 70/15 =
= - 17/15 = - 1 2/15