Question

If a = 1/19 and b = -3/4 so, verify a×b=b×a, a+b=b+a​

Answer 1

Answer:

1/19×-3/4= - 3/76

-3/4×2/19 = - 3/76

Answer 2

Step-by-step explanation:

wkt,a=1/19 &b=-3/4

1. a×b=b×a

1/19×-3/4 =-3/4×1/19

-3/76=-3/76

• therefore a×b=b×a
• hence verified

2.a+b=b+a

1/19+(-3/4)=(-3/4)+1/19

LCM=76

1×4/19×4 +(-3×19/4×19)=(-3×19/4×19)+1×4/19×4

4/76-57/76=-57/76+4/76

-53/76=-53/76

• therefore a+b=b+a
• hence verified