Вычисли (4.5 : 1/5 - 5/8 : 0,75) * 2.3 -

(4,5 / 1/5 - 5/8 / 0,75) * 2,3 - 3 2/3 * 2,3 = 41 2/5.
    4,5 = 4 5/10 = (4 * 10 + 5)/10 = 45/10 на 5 = 9/2.
    0,75 = 75/100 на 25 = 3/4.
    2,3 = 2 3/10 = (2 * 10 + 3)/10 = 23/10.
    3 2/3 = (3 * 3 + 2)/3 = 11/3.
    2,3 = 2 3/10 = (2 * 10 + 3)/10 = 23/10.
1. 9/2 / 1/5 = (9 * 5)/(2 * 1) = 45/2.
2. 5/8 / 3/4 = (5 * 4)/(8 * 3) = 20/24 на 4 = 5/6.
3. 45/2 - 5/6 = (135 - 5)/6 = 130/6 на 2 = 65/3.
4. 65/3 * 23/10 = (65 * 23)/(3 * 10) = 1495/30 на 5 = 299/6.
5. 11/3 * 23/10 = (11 * 23)/(3 * 10) = 253/30.
6. 299/6 - 253/30 = (1495 - 253)/30 = 1242/30 на 6 = 207/5 = 41 2/5 либо 41,4.