Verified Answer :

☆ First we need to Distribute:
⇒ (2)(3m)+(2)(4)+(3)(m)+(3)(−5)
⇒ 6m+8+3m+−15
☆ Now Combine Like Terms:
⇒6m+8+3m+−15
⇒(6m+3m)+(8+−15)
⇒9m+−7
☆ Giving us the answer of:
9m+−7

so we distribute the 2 to the 3m and the +4 so
23m=6m 
24=8 
6m+8

we then distribute the 3 to the m and the - 5
3m=3m
3-5=-15 ((+) times (+) or (-) times (-)=(+), (-) times (+) or (+) times (-)=(-))
3m-15

add 6m+8 and 3m-15
6m+8+3m-15
add like terms (m terms + m terms and number + numbers)
6+3=9 so 
3m+6m=9m
9m-7

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