Question

Please answer it fast it's urgent

Answer 1

1) (i)-1/3+2/7
lcm = 21
7/21+6/21=13/21
+
2/7+(-1/3)
lcm=21
6/21+7/21=13/21

(ii)-3/5+(-11/13)
lcm=65
-39/65+(-55/65)= -94/65

-11//13+(-3/5)
lcm=65
-55/65+(-39/65)=-94/65

(iii)2/1+7/-8
lcm=-8
-16/-8+7/-8=23/-8

7/-8+2/1
lcm=-8
7/-8+-16/-8=23/-8

(iv)0/1+-15/8
lcm=8
0/8+-15/8=-15/8

-15/8+0/1
lcm=8
-15/8+0/8=-15/8