2. Which expression shown is equivalent to the sum of the expressions (3m + 2n – 6) and (-4-6m + 7n) written in standard form?
Show your work here.
I
a.-3m + 9n - 10
b. 10m - 4n - 10
c.
-4mn
d. In - 3m + 10

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