Question

Express 2・1 3...as a rational number

Answer 1

Answer:

Let x=2.13....

10x=21.333

100x=213.333

100x-10x=213.333-21.333

90x=192

x=32/15

Answer 2

Answer:

211/99

Step-by-step explanation:

let x=2.1313....

multiplying above eqn by 100

100 x= 213.1313..

subtracting above two eqns

100x =213.1313...

x = 2.1313

99x =211 .0000

x =211/99