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Kamila Koch
Mathematics
30 January, 22:30
4x+8=20 - 4x+4y=-10 Solve for X and Y
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Ismael Delgado
30 January, 22:32
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4x + 8y = 20
-4x + 4y = - 10
12y = 10
y = 10/12 = 5/6
4x + 8 (5/6) = 20
4x + 40/6 = 120/6
4x = 80/6
x = 3 1/3 or 10/3
4 (10/3) + 8y = 20
40/3 + 8y = 60/3
8y = 20/3
y = 5/6
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