Szczegółowe wyjaśnienie:
a.)19-3/4×6 i2/7=3/4×6i 2/7=3/4×44/7=132/28= 4i 5/7
19- 4i5/7=100/7=14i 2/7
b)5/6:(1i3/4+ 2i1/2)=1i3/4+2i1/2=7/4+5/2=17/4=4i1/4
5/6 :4i1/4= 5/6:17/4 = 5/6 × 4/17= 20/102= 10/51
c) 3.5×1/5+2/7×0,8=7/10+17/10=66/70=33/35
d)(4i 1/3-2i1/6):1i 5/8=13/3-13/6=13/6=2i1/6 :1i 5/8=13/6:13/8=13/6×8/13 = 104/78=4/3=1i 1/3
e)6,4:2 i 2/15-24,8:4/5 =6,4:2i2/15=960/320=3
24,8: 4/5=1240/40=31
3-31= -28
f)2i1/2+3×(6,2+4,8)=6,2+4,8=11
3×11=33
2i1/2+33=71/2=35i1/2
g)5i3/4× 1/23- 2i 2/7×1/16= 5i3/4×1/23= 23/92=1/4
2i2/7×1/16=16/7×1/16= 16/112= 1/7
1/4-1/7 = 3/28
h)24,75:3/4+5 i 1/2: 2i 3/4= 24.75:3/4=9900/300=33
5i1/2: 2i 3/4=11/2 ×4/11= 44/22= 2
33+2= 35
