-91/4-0,75
-91/4-3/4
-47/2 = -23 (целых) 1/2 или же -23,5
<span>2 * (49 - 54 : 6 + 27 : 9) + 72 : 8 - 16 = 79
1) 54 : 6 = 9
2) 27 : 9 = 3
3) 49 - 9 = 40
4) 40 + 3 = 43
5) 2 * 43 = 86
6) 72 : 8 = 9
7) 86 + 9 = 95
8) 95 - 16 = 79</span>
5у * у³ * 2х² * х³ = (5*2) * (у¹⁺²) * (х²⁺³) = 10у³х⁵
(2³ * (3²)³ ) / (3⁵ * 2 ) = (2³ * 3²*³ ) / (3⁵ * 2¹ ) =
= 2³⁻¹ * 3⁶⁻⁵ = 2² * 3¹ = 4 * 3 = 12
(5х+2х)•14=294
7х * 14 = 294
7х=294 :14
7х=21
х=21:7
х=3
проверка (5*3 + 2*3) *14=294
(15+6)*14=294
21*14=294
294=294