Question

Oblicz:
zadanie w załączniku

Answer 1

A) 0,2 + 3/5 = 0,2 + 0,6 = 0,8
    ( 3/5 = 6/10 = 0,6)

b) 1i1/3 - 0,1 = 1 i1/3 - 1/10 = 1i10/30 - 3/30 = 1i7/30
    ( 0,1 = 1/10)

c) 1,25 * 3/4 = 1,25 * 0,75 = 0,9375
     ( 3/4 = 0,75)
     lub
   1,25 * 3/4 = 1i1/4 * 3/4 = 5/4 * 3/4= 15/16
     (0,25 = 1/4,   15/16 =0,9375)

d)  0,7 : 7/9 = 7/10 : 7/9 = 7/10 * 9/7 = 1/10 *9/1 = 9/10 

Answer 2

0,2+3/5=2/10+6/10=8/10
1 1/3 - 1/10 =4/3 - 1/10= 40/30 - 3/30 =37/30 = 1 7/30
1 1/4 - 3/4 = 2/4 = 1/2
0,7 : 7/9 = 7/10 * 9/7 = 63/70

proszę o naj :)