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3x+2y=7
6x+9y= 24
6x+4y=14
5y= 10
y=2
2x+3y=8
2x + 3(2) = 8
2x+6=8
2x= 8-6 = 2
x= 1
3x + 2y = 7 | x3 | 9x + 6y = 21
-5x + = -5
x = -5/-5
x = 1
9x + 6y = 21
9(1) + 6y = 21
9 + 6y = 21
6y = 21 - 9
6y = 12
y = 12/6
y = 2