Question

Of the three consecutive natural number, five times the smallest is $9$ more than four times the greatest number, find the numbers.

Answer 1

Let consecutive Number $=x,x+1,,x+2$
Then Greatest is $=x+2$
Smallest $=x$
Middle $=x+1$
according to question
$5x=4(x+2)+9$
$5x=4x+8+9$
$5x-4x=8+9$

$x=17$

The numbers are $17,18,19$.