Question

Bună ziua!
Tot testul 2​

Answer 1

1.a)5/7=10/14

==10/14 simplificam cu 2=5/7

b)7/3;24/13

c)13/14-11/14=2/14

d)8/6+3/6=11/6

2.a)3/7×560=1680/7=240m

b)70×40/100=2800/100=28

c)b={0}

a={0;1;2;3;4;5;6;7;8;9}

==}10 fractii

3)5/11=n/88

5×88=11n

440=11n

440:11=n

40=n

b)Daca pretul se mareste cu 15^

100%+15%=115%

==}1220×115/100=140300/100=1403lei costa