Question

Use the distributive property to expand the expression. (5x + 6y) − (3z + 4)

Answer 1

5x + 6y - 3z - 4

the negative makes everything in the second set of parentheses negative 

Answer 2

5x + 6y − 3z − 4

Because

(5x + 6y) − (3z + 4)

(5x + 6y) + (−1)(3z + 4)

5x + 6y + (−1)(3z) + (−1)(4)

5x + 6y − 3z − 4