Jenny goes to dance class every 6 days, karate class every 12 days, and to the library
every 18 days. on december 157 she went to both classes and the library. on what date
will she do both classes and go to the library?

On the 36th day, she would go to all classes.

My work:

6- 6, 12, 18, 24, 30, 36

12- 12, 24, 36

18- 18, 36

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

what is the model?

step-by-step explanation: