7-1 Additional Practice Adding And Subtracting Polynomials Answer Key May 2026

The subtraction was the worst. His friend Mia had whispered, “Just distribute the minus sign, Leo. Like a negative love letter.” But Leo kept forgetting to flip the last sign.

He distributed the negative: 5y³ - 3y³ = 2y³. 0y² - 4y² = -4y². -2y - (-y) = -2y + y = -1y. 1 - (-6) = 7. The subtraction was the worst

The next morning, she returned the graded practice. Red checkmarks on 1, 3, 4, 5, 6… and a small, perfect check on #7. “Just distribute the minus sign