PLZ HELP! (Simplify) 1.) (5/7)+5(3a-4b)-(7a+12b)

2.) 2.4+5.4q-4.5q+3.6

3.) (13/4)x-8y-(5/4)x+7y+5

4.) 5x(3-12x)-3(4-20x2)

5.) (5/7)a2+13-(5/7)a-3

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