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19.01.2021 •
Mathematics
Solve using substitution y = 3x x + y = 8
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Ответ:
The answer is
x=2
y=6
Step-by-step explanation:
y=3x
x+y=8
Substituting equation 1 in 2:
x+y=8
x+3x=8
4x=8
x= 8/4 = 2
x=2
Substituting the value of x in equation 1 to find y:
y=3x
y=3x2
y=6
Ответ: