Question

Oblicz: a) 2/3 + 0,6= b) 4,2 - 1i1/9= c) 3,6 - 1i 1/2= d) 2i 1/3: 0,8= e) 5,2 x 2/7
f) 0,6 : 2/3=

Answer 1

a) 2/3 + 0,6=2/3+6/10=20/30+18/30=38/30=1i8/30
b) 4,2 - 1i1/9=42/10-10/9=378/90-100/90=278/90=3i8/90
c) 3,6 - 1i 1/2=3,6-1,5=2,1
d) 2i 1/3: 0,8=7/3:8/10=7/3*10/8=70/24=2i22/24
e) 5,2 x 2/7=52/10*2/7=52/35=1i17/35
f) 0,6 : 2/3=6/10:2/3=6/10*3/2=18/20=9/10

Answer 2

A)2/3+0,6=20/30+18/30=38/30=1i4/15
b)4,2-1i1/9=4i2/10-1i1/9=4i18/90-1i10/90=3i8/90=3i4/45
c)3,6-1i1/2=3,6-1,5=2,1
d)2i1/3:0,8=7/3:8/10=7/3x10/8=70/24=35/12=2i11/12
e)5,2x2/7=5i2/10x2/7=52/10x2/7=104/70=52/35=1i17/35
f)0,6:2/3=6/10x3/2=18/20=9/10=0,9