Use the distributive property to match equivalent expressions. 7(4+ x)
28 - 74
28 +7x
-7(-4+ x)
-28 + 7x
-7(4 - x)
-28 - 74
71-4-x)

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given