Question

using appropriate properties of rational number find sum of 3/4+4/21+7/8+5/7

Answer 1

Step-by-step explanation:

• 3/4+4/21+7/8+5/7
• (3/4+7/8)+(4/21+5/7)

l.c.m=8

l.c.m.=21

• (6/8+7/8)+(4/21+15/21)
• 13/8+19/21

l.c.m.=168

• 273/21+152/21
• 425/21

Answer 2

Answer:

425/21

Step-by-step explanation:

It's associative activity