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Anna11
[10]
3 years ago
9
What is 2x-3y=9 -5x-3y=30
Mathematics
Answer
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2
answers:
lina2011
[118]
3 years ago
8
0
2x - 3y = 9 ⇒ -10x + 15y = -45
-5x - 3y = 30 ⇒ <u>-10x - 6y = 60</u>
<u>9y</u> = <u>15</u>
9 9
y = 1 2/3
2x - 3(1 2/3) = 9
2x - 5 = 9
<u> +5 +5</u>
<u>2x</u> = <u>4</u>
2 2
x = 2
(x, y) = (2, 1 2/3)
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Shkiper50
[21]
3 years ago
3
0
If your in algebra 1 then i'm pretty sure you subtract the 2x and that cancels and subract the 2x with the 9 and you have -3y= -2x+9 so you divide -3 to the -3y, the -2x and positive 9 and your answer will be y=2/3x-3
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