ijohnh14
ijohnh14
30-01-2019
Mathematics
contestada
Please help me!!!!!!!!
Respuesta :
mathecoach
mathecoach
08-02-2019
Answer:
(3·x + 6) + (7·x + 4) = 180 --> x = 17
3·17 + 6 = 57
Answer D is correct.
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