Solve for x, 3(x-y) = 6

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?