Use distributive method
5r - 50 = -51
Add 50
5r = -1
Divide by 5
r = -1/5
divide 35 by 3600
divide 38 by 60
add them together
35/3600 = 0.009722
38/60=0.6333
0.6333+0.009722 = 0.64305
so 13.64305 degrees. round answer as necssary
Answer:

Step-by-step explanation:
Given

Required
Solve

Collect like terms


Take LCM


For the first one, its 86 square in, and the second one is 45 square cm.