What is 2 3/4+12 6/8?

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then,the two had the same amount of money. how much money did each have originally?

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3