nabilarizwan0987 nabilarizwan0987 20-12-2022 Mathematics Answered 9. Solve each system of equations using elimination. You must show your work for credit. (From Unit 2, Lesson2 14-16.) a. 2 x+5 y=12 4 x-y=2 b. 2 x-5 y=11 3 x+2 y=7