brook12343437
brook12343437
03-03-2021
Mathematics
contestada
I have no idea what this is
Respuesta :
uniconevip
uniconevip
03-03-2021
Answer:
23
Step-by-step explanation:
2x+14+x+7=90, 3x+21=90,3x=90-21. 3x=69, x=23
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