Answer:
30x + 7
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
31x + 21
use pemdas
7x + 24x + 21
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