48 = 2⁴· 3; 36 = 2² · 3²; НОК = 2⁴· 3² = 144
144 : 48 = 3 - доп. множ. к 11/48 = 33/144
144 : 36 = 4 - доп. множ. к 7/36 = 28/144
1) 11/48 + 7/36 = 33/144 + 28/144 = 61/144
32 = 2⁵; 60 = 2² · 3 · 5; НОК = 2⁵· 3 · 5 = 480
480 : 32 = 15 - доп. множ. к 19/32 = 285/480
480 : 60 = 8 - доп. множ. к 11/60 = 88/480
2) 19/32 + 11/60 = 285/480 + 88/480 = 373/480
3) 7/18 + 0 = 7/18
4) 11/60 + 17/60 = 28/60 = 7/15 (сократили на 4)
21 = 3 · 7; 48 = 2⁴· 3; НОК = 2⁴· 3 · 7 = 336
336 : 21 = 16 - доп. множ. к 17/21 = 272/336
336 : 48 = 7 - доп. множ. к 11/48 = 77/336
5) 17/21 - 11/48 = 272/336 - 77/336 = 195/336 = 65/112 (сократили на 3)
6) 16/25 - 0 = 16/25
5/9 * (- 45с) = - 25с
0,36у * у = 0,36у^2
-20 * 0,7b = - 14b
7/11 * 3/7d = 3/11d
- 1,2 * (-5z) = 6z
245x - 100,1 + 265x + 99,9 = 510x - 0,2
2/3y + 48 + 2 1/7y - 51 = 2/3y + 15/7y - 3 = 14/21y+45/21y-3= 59/21y-3 =
= 2 17/21y - 3
- 0,09 - 13,01b + 0,9a + 0,19 = 0,9a -13,01b + 0,1
- 41 3/9n + m - 8 4/11n - 22,2m = - 21,2m - (49n + 33/99n+36/99n) =
= - 21,2m - 49 69/99n = - 21,2m - 49 23/33n