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Mathematics
Riley Atkins
10 April, 20:31
2x + y = 5
x + y = 4
+4
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Leland Stafford
10 April, 21:07
0
2x + y = 5 and x + y = 4
If you need to find x and y, then you can rearrange the equations like so:
x = 4 - y
lets plug this into the first equation:
2 (4 - y) + y = 5
8 - 2y + y = 5
8 - 1y = 5
-1y = - 3
y = 3
So now that we have y, we can plug it into either equation to get x:
x + 3 = 4
x = 1
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