9 Salvatore is making some back-to-school
packs for his teacher. He has 96 pencils
and 80 erasers. He wants each pack
to be the same, and he wants to use
all of the pencils and erasers. Find the
greatest common factor of 96 and 80
to figure out how many packs he
can make.
How many pencils and erasers will be in
each one?
packs containing
pencils
and
erasers
No

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