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Mathematics
Saniya Boone
10 February, 14:42
X+3y=5
2x-3y=-8
Substitution method
+1
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Tony Duncan
10 February, 16:16
0
x+3y=5 x = - 3y + 5
2x-3y=-8
2 (-3y + 5) - 3y = - 8
-6y + 10 - 3y = - 8
-9y + 10 = - 8
-9y = - 18
y = 2
x + 3 (3) = 5
x + 9 = 5
x = - 4
(-4, 2)
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