Please help! As soon as possible, please.

Add the fractions and simplify 1/2+ 1/3

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Let u = {q, r, s, t, u, v, w, x, y, z} a = {q, s, u, w, y} b = {q, s, y, z} c = {v, w, x, y, z}. list the elements in the set.a ∩ (b ∪ c)a) {q, s, w, y}b) {q, y, z}c) {q, s, u, w, y, z}d) {q, r, w, y, z}