срочно 75 задание ....
Ответы
1)9/11x - 6/11 = 50 3)(2 1/16 + x) : 3 9/32 = 2/3
9x - 6 = 550 (33/16 + x) : 105/32 = 2/3
9x = 550 + 6 (33/16 + x) × 32/105 = 2/3
9x = 556 22/35 + 32/105x = 2/3
x = 556/9 66 + 32x = 70
Скорочуемо 32x = 70 - 66
x = 61 7/9 32x = 4
61 ціле число x = 1/8
2)11,2: (x - 2/15) = 6
11,2 : (x - 2/15) = 6,x ≠ 2/5 4)(x + 8/27) : 19 5/9 = 1/12
56/5 : 15x-2/15 = 6 (x + 8/27) : 176/9 = 1/12
56/5 × 15/15x - 2 = 6 (x + 8/27) × 9/176 = 1/12
56 × 3/15x - 2 = 6 9/176x + 1/66 = 1/12
168/15x-2 = 6 27x + 8 = 44
168 = 6(15x - 2) 27x = 44 - 8
28 = 15x - 2 27x = 36
-15x = -30 x = 4/3
x = 2 Скорочуемо
x = 1 1/3
/ = дроб