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Daca 120:a =b
b:c=1
80:c=2
Atunci
a=
b=
c=


Răspuns :

b : c = 1
b = c
80 : c = 2
2c = 80
c = 80 : 2
c = 40
b = 40
120 : a = b
ab = 120
a * 40 = 120
a = 120 : 40
a = 3

80:c=20 c=80:20 c=4 80:4=20 b:c=1 b:4=1 b=4×1 b=4 4:4=1 120:a=b 120:a=4 a=120:4 a=30 120:30=4