Can someone help i only need to do the evens

How do i do this activity, is appreciated

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

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