davielisangulo68 davielisangulo68
  • 08-03-2021
  • Mathematics
contestada

I need help this is for tonight!!!

I need help this is for tonight class=

Respuesta :

4546b
4546b 4546b
  • 08-03-2021

Answer:

54

Step-by-step explanation:

first find x:

21x-9=14x+12

21x=14x+21

7x=21

x=3

now substitute

21(3)-9

63-9=54

Answer Link
ximenaj1120 ximenaj1120
  • 08-03-2021
54 should be correct due to the problem given
Answer Link

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