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Diano4ka-milaya [45]
3 years ago
5

How to find where the equations meet.

Mathematics
1 answer:
zzz [600]3 years ago
3 0
The first sentence → x - 2y = -1
the second one → 3x - 2y = -3

multiply the first one by -1
you can get → -x + 2y = 1

plus two sentences together
you can get → 2x = -2

so you are able to know that x = -1
and y = 0
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Which expression is equivalent to (−7x+8x+19y)−(6y+8−20x−16y)?
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Answer:

21x + 29y - 8

Step-by-step explanation:

(−7x+8x+19y)−(6y+8−20x−16y)

−7x+8x+19y−6y-8+20x+16y

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5 0
2 years ago
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nadezda [96]

Answer: x = −12

Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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4 0
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