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Mathematics
Carl Soto
3 February, 14:52
3x + 2y = 6
2x + 5y = 7
+4
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Carlo
3 February, 18:38
0
3x + 2y = 6
2x + 5y = 7
Multiply the first by 5, second by 2, then subtract
15x + 10y = 30
4x + 10y = 14
11x = 16
x = 16/11
10y = 30 - 15x = 30 - 15 (16/11) = 90/11
y = 9/11
Answer: x=16/11, y=9/11
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Gilberto Alvarado
3 February, 18:50
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3x + 2y = - 6
2x + 5y = 7
Multiply first by 5, second by 2,
15x + 10y = 30
4x + 10y = 14
11x = 16
x = 16/11
10y = 30 - 15x = 30 - 15 (16/11) = 90/11
y = 9/11
solve x=16/11 y=9/11
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