Question

Aflati in fiecare caz un nr rational cu proprietatea ca:
♣ 6/4 din el este 345
♣ 3,12 din el este el este 150
♣1,(4) din 63

DAU CORONITA!

Answer 1

6/4·x=345⇔x=345:6/4=345·4/6=230
3,12·x=150⇔x=150:3,12=468
1,(4)=(14-1)/9=13/9
13/9·x=63⇔x=63:13/9=63·9/13=567/13

Answer 2

6/4 ·x=345⇒x=345/6/4⇒x=345·4/6⇒x=345·2/3⇒x=115·2⇒x=230;
3,12 ·y=150⇒312/100 ·y=150⇒y=150/312/100⇒y=150·100/312⇒y=150·50/156⇒y=150·25/78=48,07;
1,[4] ·63=13/9 ·63=13/1·7/1=13·7=91;