Stefanialupu121983ask Stefanialupu121983ask Matematică a fost răspuns Scrie sub forma de inmultire: a)7+7= 8+8+8+8= 9+9+9+9+9+9+9= b)9+9+9+9+9+9+9= 7+7+7+7+7= 8+8+8=