Question

Express the following decimal expression into numbers -21.2137-

Answer 1

Answer:

1

rafeek4

14.07.2018

Math

Secondary School

+5 pts

Answered

Express the following decimal expression into rational numbers

5th question

Let x = 3.17bar

Multiply by 10 on both sides because only Bar value should be there after bar,

10x = 31.7 bar

As there is one number under bar, multiply by on both sides,

100x =317.7 bar

Then, Subtract 10x from both sides,

100x - 10x = 317.7 bar - 31.7 bar

=> 90x = 286

hence, 3.17 bar = 286/90