Which of the following expressions is equivalent to x − 9 − 3x + 2y + 3 − 2? A.
4x + 2y + 14

B.
3x + 2y + 1

C.
x − 9

D.
−2x + 2y − 8

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality