Question

Oblicz:
a) 2 1/3 +5/6 * 3/5=
b) 7 - 4/5 : 2 1/2=
c)1 1/4* 1 3/5 - (0,6-0,55)=
(Proszę z obliczeniami. Z góry dzięki :)

Answer 1

A) 2 1/3 + 5/6 * 3/5 = 2 1/3 + 15/30= 7/3 + 15/30 = 70/30 + 15/30 = 85/30 = 2 25/30
b) 7- 2 2/1/= 7 - 4/5 ; 5/4 = 7 - 4/5 * 4/5 = 7 - 16/25 = 6 25/25 - 16/25 = 6 9/25
c) 1 1/4 * 1 3/5 - (0,6 - 0,55) = 1 1/4 * 1 3/5 - 0,005 = 5/4 * 8/5 - 0.05 = 40/20 - 0.05 = 2 - 0.05 = 1.95