Question

Simplifica si adu la acelasi numitor si efectueaza calculele: a) 10/5 + 6/9 ; b) 3/24 + 3/12 + 5/10 ; c) 4/36 + 5/15 ; d) 14/30 - 6/15 + 4/12 ; e) 9/30 + 4/20 - 7/14 ; f) 6/28 + 6/12 - 10/35. Dau coroana URGENT!!

Answer 1

a) 10/5 + 6/9= 2/1+2/3 = 6/3 + 2/3= 8/3
b) 3/24 + 3/12 + 5/10= 1/8 + 1/4 + 1/2= 1/8 + 2/8 + 4/8= 7/8
c) 4/36 + 3/15 = 1/9 + 1/5= 5/45 + 9/45= 14/45
d) 14/30 - 6/15 + 4/12 = 7/15 - 6/15 + 1/3= 1/15 + 5/15= 6/15
e) 9/30 + 4/20 - 7/14 = 3/10 + 2/10 - 1/2 = 5/10 - 1/2= 1/2 - 1/2=0
f) 6/28 + 6/12 - 10/35 = 3/14 + 1/2 - 2/7 = 3/14 + 7/14 - 4/14 = 6/14 = 3/7