Question

Can someone give 2&3 ans pls answer only if you know if u know I will mark you as brainliest

Answer 1

Answer:

Ans2. To prove , a x b = b x a and a+b = b+a

a= 1/2 and b= 3/4

a x b =b x a

1/2 x 3/4 = 3/4 x 1/2

3/8 = 3/8

Hence , proved

a+b = b+a

1/2 +3/4 = 3/4+1/2

2+ 3 / 4 = 3 + 2 / 4

5/4 = 5/4

Hence, proved

Ans 3. [ 13/5 +(-12/7]  / [(-31/7) * ( 1/-2)]

[ 91 + (-60) / 35 ]/ [ 31/14]

[91 -60 / 35] / [31/14]

(31 / 35) / (31 / 14)

31 * 14 / 35 * 31

434 / 1085

0.4

Hope it helps you !!