11 Questions Add and Subtract Rational Expressions Add and subtract rational expressions. Based on CommonCore standard, and on TEKS standard, grade11 a/c + b/c = (a + b) ÷ c (a + b) ÷ (c + c) (a + b) ÷ c² ac + bc What is the sum of (5)/(3x) + (7)/(3x), in simplest form? (1)/(4x) 4/x 2/x 4/x² Subtract (x + 3)/(5x) – (4x + 1)/(5x) (3x + 4)/(5x) (–3x + 2)/(5x) (3x – 2)/(5x) (–3x + 4)/(5x) and 8 more awesome questions! Check them out by clicking “Play”.