tyryyt2 tyryyt2 31-03-2020 Mathematics contestada 1. X - 9 = 20 2. 2x - 5 = 25 3. Y + 8 = 12 4. 6y + 6 =18 5. 4X = 16 6. X + 14 = - 7 7. Y/-7 = -9 8. 11x = 132 9. X - 9 = -15 10. 4y - 7 = 21 11. 12y = 72 12. X/2 - 9 = 5 13. Y - (-9) = 14