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Marlon Ashley
Mathematics
3 February, 17:48
X+y=19, - x+y=1 (subtraction)
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Brylee Irwin
3 February, 17:53
0
Ok so elimination
add them togehter
x+y=19
-x+y=1 +
0x+2y=20
2y=20
divide both sides by 2
y=10
subsitute
x+y=19
x+10=19
subtrac 10
x=9
x=9
y=10
(x, y)
(9,10)
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Katelynn Odonnell
3 February, 18:06
0
x + y = 19
-x + y = 1
2y = 20
2 2
y = 10
x + y = 19
x + 10 = 19
- 10 - 10
x = 9
(x, y) = (9, 10)
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