1.
a l----l
b l----l +7
a+b=27
27-7=20
2 segmente egale =20
1 segment = 20÷2=10
deci a=10
b=17
2.
a l----l
b l----l +28
a+b=44
44-28=16
2 segmente egale =16
1 segment = 16÷2=8
deci a=8
b=36
3.
a l----l
b l----l -24
a+b=38
38+24=62
2 segmente egale =62
1 segment = 62÷2=31
deci a=31
b=7