Odpowiedzi

2010-01-07T17:20:10+01:00
A) (4-11/4 x 16/25) x (-15 5/8)= (4- 44/25) x (-125/8)=
(100/25 - 44/25) x (-125/8)= 66/25 x (-125/8) = -165/4= -41,25

b) 4/5 -( 1,2 x 5/12 - 0,8) : (-1/8)= 4/5 - ( 6/5 x 5/12 - 4/5) : (-1/8) = 4/5 - (-1/5) : (-1,8)= 4/5 + 1/5 x (-8/1) = 4/5 - 8/5= -4/5

c) 4,5 x 1 2/3 - 3,75= 4 1/2 x 1 2/3 - 3 3/4 = 100/12 - 45/12= 4 7/12

5/9 - 10/27: (-5/6)=5/9 -10/27 x (-6/5)= 5/9 - (-4/9) = 5/9+ 4/9=1