Question

if A:B =19:21 and B:C= 21:7 find out A:B:C

Answer 1

A:B=19:21
B:C=21:7
B is equal in both...

then, A:B:C=19:21:7 ...is the answer...

Answer 2

A. : B. : C
19. : 21
___21. : 7

B. is equal in both.
So,
A. : B. : C
19. : 21. : 7

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