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alexgriva [62]
4 years ago
12

If BC = 4x – 5 and CD = 2x + 7, find x.

Mathematics
1 answer:
AleksAgata [21]4 years ago
5 0
X=6, just subtract the 2x from both sides and you would have 2x - 5 = 7

then add the 5 to both sides which equals 2x = 12

then finally divide by 2 and get x = 6
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Answer:

x = -1, and y = -2, giving you the answer (-1, -2)

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In the second equation, we're told that y is equal to 2x.  With that, we can replace "y" in the first one with "2x", giving us:

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3 years ago
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