Răspuns :
a-b = 200
b= a : 3 => 3b = a
a-b = 200
3b- b = 200
b= 100
a = 3 x b = 3 x 100 = 300
b= a : 3 => 3b = a
a-b = 200
3b- b = 200
b= 100
a = 3 x b = 3 x 100 = 300
a-b=200
a=3×b
a=b+200
a=!___!___!___!
b=!___!
3b-b=200
2b=200=>b=200:2=>b=100
a=100×3=>a=300
Proba:a-b=200
300-100=200
300:100=3-b este mai mic de 3 ori ca a.
a=3×b
a=b+200
a=!___!___!___!
b=!___!
3b-b=200
2b=200=>b=200:2=>b=100
a=100×3=>a=300
Proba:a-b=200
300-100=200
300:100=3-b este mai mic de 3 ori ca a.