Question

Q17. Show that:
(a) (85 x 30)x 4 = 85 x(30 x 4)
(b) (693 + 432)+412 = 693 + (432 + 412)
did not match ​

Answer 1

(a) Let a=85,b=30and c=4.

By associative law of multiplication:for any integer a,b,c ,we have:

(a×b)×c=a×(b×c).

So (85×30)×4=85×(30×4)

Answer 2

a) (85*30)*4= 85*(30*4)

2550*4 = 85*120

10,200 = 10,200

L. H. S. = R. H. S.

b) (693+432)+412 = 693+(432+412)

1125+412 = 693+844

1537 = 1537

L. H. S. = R. H. S.