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Drupady [299]
3 years ago
5

If y = 3x and 2x + 4y = 12, then 2x + 4(3x) = 12

Mathematics
1 answer:
Kamila [148]3 years ago
6 0

Answer:

x=6/7 and y=18/7

Step-by-step explanation:

If y = 3x and 2x + 4y = 12,

then substitute the value of y with 3x

2x + 4(3x) = 12

2x+12x=12

14x=12

x=12/14=6/7

y=3x=3*(6/7)=18/7

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