Question

using rearrangement property find the sum of the following 2/7+-13/20+-11/14+3/10​

Answer 1

Answer:

2/7+-13/20+-11/14+3/10

2/7+(-13/20+-11/14)+3/10

2/7+(-11/14+-13/20)+3/10

(2/7+-11/14)+(-13/20+3/10)

(2/7-11/14)+(3/10-13/20)

(2×2-11×1)/14+(3×2-13)/20

(4-11)/14+(6-13)/20

-7/14+(-7/20)

-1/2-7/20

-(1/2+7/20)

-(10+7)/20

-17/20