Find the measure of the angles marked x and y in the given diagram in the line L is parallel to line m?

Which of the following are accepted without proof in a logical system? check all that apply.

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15