Răspuns :
a+b=56
a:b=7
a=7b
7b+b=56
8b=56
b=56:8
b=7
a+b=56
a+7=56
a=56-7
a=49
49+7=56 ( A )
a:b=7
a=7b
7b+b=56
8b=56
b=56:8
b=7
a+b=56
a+7=56
a=56-7
a=49
49+7=56 ( A )
Salut,
a+b = 56
a:b = 7 ⇒ a = 7b.
a+b = 56
7b+b = 56
8b = 56
b = 56/8
b = 7.
a = 7b
a = 7·7
a = 49.
Succes! :3
a+b = 56
a:b = 7 ⇒ a = 7b.
a+b = 56
7b+b = 56
8b = 56
b = 56/8
b = 7.
a = 7b
a = 7·7
a = 49.
Succes! :3