Respuesta :

Answer:

4a+5b+7 and 21+40a/15a

Step-by-step explanation:

the first answer explanation: 2b+3b=5b        .                                                                                                           2nd answer explanation : 7 times 3 is 21 . 5a times 8 is 40a . 5a times 3 is 15a.

sidsmi25

Answer:

if it is 2 answers the first one is  4a + 5b+7 you have to simplify

second one is [tex]\frac{21+40}{15a}[/tex]

Step-by-step explanation:

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