Question 4 1 pts
If we are solving the system using the substitution method, what would be the best
first step?
x =7y +15
-2x - 5y = -11
0 -1x + 2y - 4
Q v = (-1/7)x - 15
0 -2x - 5y = 7y + 15
-217y + 15) - 5y = -11

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