Merry Christmas to all of you hope you get what you want (100 point)

This is so hard and it’s for a test

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

I'm confused on this could anyone me and show me what i need to do to solve it.