Respuesta :

Answer:

the first one

4a + 3a =7a

the second one

4a+4b

Answer:

1.  7a

2. 4a + 4b

Step-by-step explanation

1. (a x 4) = 4a

(a x 3) = 3a

4a + 3a = 7a

2. question 2 is correct

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