Question

Oblicz: 15 pkt!!
a) 3/4 * 2/3 + 2 4/5 =
b) ( 2 1/3- 1 3/4) : 7/8 =

Answer 1

A) 3/4*2/3+2i4/5=6/12+2i4/5=1/2+2i4/5=5/10+2i8/10=2i13/10=3i3/10
b) (2i1/3-1i3/4):7/8=(2i4/12-1i9/12):7/8=7/12:7/8=7/12*8/7=8/12=2/3

Answer 2

A) 3/4 * 2/3 + 2 4/5= 0,5 + 2 4/5= 035 + 2,8= 3,3
b) ( 2 1/3- 1 3/4) : 7/8 = (2 4/12 - 1 9/12) :7/8= 7/12 : 7/8 = 2/3