Răspuns :
a+b= 300
b:a=5
b=5a
a+5a = 300
6a=300
a=300:6
a=50
b=5 x 50 = 250
50 +250 =300
250 :50 = 5
b:a=5
b=5a
a+5a = 300
6a=300
a=300:6
a=50
b=5 x 50 = 250
50 +250 =300
250 :50 = 5