I need help with the following two questions Please Show all

I need help with the following two questions. Please Show all work for both. Please type answer instead of writing on paper. Thanks!!

5) Circles M and K are congruent and QR LN. Find QR. 3x+9 5x -7

Solution

Question 5

If QR=LN

5x-7=3x+9

2x=16

x=8

Therefore QR=5x-7

=5(8)-7

=40-7

=33

So QR is 33