Question

verify the commutative property of addition for the following rational number​

Answer 1

Answer:

A)-2/3+1/5

=-10/15+3/15

=-7/15

1/5+(-2/3)

=3/15-10/15

=-7/15

B)2/5+3/10

=4/10+3/10

=7/10

3/10+2/5

3/10+4/10

7/10

C)-4/14+10/21

=-24/84+40/84. (LCM is 84)

=16/84=4/21

10/21+(-4/14)

40/84-24/84

16/84=4/21

D)5/8+(7/-12) (negative denominator isn't allowed so we multiply it by (-1)

=5/8+(-7)/12. Both in Numerator and denominator because -1/-1 gives 1)

=5/8-7/12

=15/24-14/24

=1/24

=-7/12+5/8

=-14/24+15/24

=1/24

Please help me by giving thanks and clicking star

Answer 2

Answer:

a.2/3 and 1/5

Sol: 10 / 15 + 3/ 15

7/15

1/5+ (-2/3)

3/15 - 10/15

7/15