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OpenStudy (anonymous):
3x+y=6 4x+2y=6 Use substitution method
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OpenStudy (caozeyuan):
so y=6-3x
OpenStudy (caozeyuan):
so 4x+2(6-3x)=6
OpenStudy (caozeyuan):
4x+12-6x=6,2x=6,x=3
OpenStudy (caozeyuan):
y=6-3*3=-3
OpenStudy (uri):
3x+y=6 (-2) 4x+2y=6 ====== -6x-2y=-12 4x+2y=12 ======== -2x = 0 No solution.
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