Question

Найдите значение выражения:

А) (-48 3/4:3,9+8 1/5)(-6,3)

Б) (0,2-7/15)(-5/8)-(-5/12-0,75):2 1/3

Answer 1

А.
1) -48,75 : 3.9 = -12,5
2) -12,5 + 8,2 = -4,3
3) -4,3 * (-6,3) = 27,09 
Б.
1) 1/5 - 7/15 = 3/15 - 7/15 = -4/15
2) -4/15 * (-5/8) = 1/6
3) -5/12 - 3/4 = -5/12 - 9/12 = - 14/12 = -1 2/12 = -1 1/6
4) -1 1/6 : 2 1/3 = - 7/6 * 3/7 = -1/2
5) 1/6 - (-1/2) = 1/6 + 3/6 = 4/6 = 2/3