Respuesta :

Answer:

31x + 21

Step-by-step explanation:

use pemdas

7x+3(8x+7)

7x + 24x + 21

31x + 21

Answer:

30x + 7

Step-by-step explanation:

7x+3(8x+7)

then 3 * 8  = 24

the 3 * 7 = 21

then you have 7x + 24x +21

add like terms which arer 7x and 24x

you get 30x + 21

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