rhoy rhoy
  • 28-11-2018
  • Mathematics
contestada

how do I solve this using the substitution method

how do I solve this using the substitution method class=

Respuesta :

christ9n christ9n
  • 29-11-2018

Answer:

20 and 60

Step-by-step explanation:

20 x 3 = 60

20 + 60 = 80


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