Question

simplify 6m+7n+5m-3n

Answer 1

Finding the common factor:
m(5+6)+n(7-3)
m(11)+n(4)
11m+4n

Answer 2

Charlie's is a good approach because he/she grouped the given terms according to whether they had m as a factor or n as a factor.

Answer 3

the m terms do have m as a common factor and the n terms do have n as a common factor, but the original expression does not have a common factor.

Answer 4

11m+4n. Combine like factors.