Răspuns :
a+b= 3,09 a=2b 2b+b=3,09 3b=3,09 b=3,09/3 b=1,03
a+b=3,09 a+1,03=3,09 a=3,09-1,03 a=2,06
a+b=3,09 a+1,03=3,09 a=3,09-1,03 a=2,06
(a+b):2=3.09 a=2b
(2b+b):2=3.09
3b:2=3.09
3b=3.09x2
3b=6.18
b=6.18:3
b=2.06
a=2b
a=2.06x2
a=4.12
V: (2.06+4.12):2=3.09
(2b+b):2=3.09
3b:2=3.09
3b=3.09x2
3b=6.18
b=6.18:3
b=2.06
a=2b
a=2.06x2
a=4.12
V: (2.06+4.12):2=3.09