ryleighann127
ryleighann127
19-03-2020
Mathematics
contestada
21x+7y=42
−5x+5y=10
Respuesta :
gomezIandrea
gomezIandrea
19-03-2020
Answer:
y=3, x = 1
Step-by-step explanation:
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solve using the substitution method -7x+y =42 and 5x+13y =66
