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2x+3y=8
6x+4y=34
6x+9y=24 -
-5y=10
y = -2
3x2y=17
2x+3y=8
9x+6y=51
4x+6y=16 -
5x =35
x =7
x+y = 7+(-2)
=5
semoga bermanfaat :)