1) x - 24 5/8 = 30 5/6 + 41 7/12
x - 24 5/8 = 30 10/ 12 + 41 7/12
x - 24 5/8 = 71 17/12 = 72 5/12
х = 72 5/12+24 5/8
x = 71 10/24 + 14 15/24
x = 85 25/24= 86 1/24
2) x - 49 7/12 = 51 5/6 + 10 1/18
x - 49 7/12 = 51 15/18 + 10 1/18
x - 49 7/12 = 51 16/18
x = 51 8/9 + 49 7/12
x = 51 32/36 + 49 21/36
x = 100 53/36= 101 17/36
Х-на первой
4х-на второй
х+4х=190
5х=190
х=38 книг на первой
4х=38·4=152 книги на второй
204=2×2×3×17
350=2×5×5×7
НОК=2×2×3×5×5×7×17=35700
204=2×2×3×17
350=2×5×5×7
НОД=2
1.x/8=15/30; 30x=120; x=4.
2.x/6=20/40; 40x=120; x=3.