4x+y=17 ,, 6x+3y=15 find x and y
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4x+y=17 ,, 6x+3y=15 find x and y
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6x + 3y = 15
-(4x + y = 17)
2x + 2y = -2
2x = -2 - 2y
3(-2-2y) + 3y = 15
-6 - 6y + 3y = 15
-6 - 3y = 15
-3y = 21
y = -7
4x - 7 = 17
4x = 24
x = 6
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