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dusya [7]
4 years ago
12

2x - y - 4 = 0

Mathematics
2 answers:
natka813 [3]4 years ago
7 0
2x-y=4
3x+y=9

5x=13

x=13/5

3(13/5)+y=9

39/5+y=45/5

y=45/5-39/5

y=6/5

the answer is b
Aleks [24]4 years ago
6 0
So to start you should get x and y on the same side and get the numbers on one side. Then you should cancel out a variable. Because both y’s are 1 and they are opposite charges they will both cancel out to 0. Then add what is remaining which is the 2x and the 3x and equal that to +9-4 which equals 5. You want x to be all by itself so you would divide both sides by 5 and get that x=1. Then you would just substitue and solve for y. Hope this helped!
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<h3>How to illustrate the information?</h3>

From the information, it was stated that an ancient culture labeled certain numbers as square numbers and that the numbers 1, 4, 9, 16, 25, and so on are square numbers.

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