3/4
Объяснение:
1 целая 4/5 = 9/5
(3/4 + x) ÷ 9/5 - 1/3 = 1/2
(3/4 + x) ÷ 9/5 = 1/2 + 1/3
(3/4 + x) ÷ 9/5 = 3/6 + 2/6
(3/4 + x) ÷ 9/5 = (3+2)/6
(3/4 + x) ÷ 9/5 = 5/6
3/4 + x = 5/6 × 9/5
3/4 + x = (5×9)/(6×5)
3/4 + x = 9/6
3/4 + x = 3/2
x = 3/2 - 3/4
x = 6/4 - 3/4
x = (6-3)/4
x = 3/4
