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a1/a2=b1/b2
=-1/2=-1/2
=inconsistent
=-1/2=-1/2
=inconsistent
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0
2x-3y=8
4x-6y=9
by elimination method
2(2x-3y=8)-1
4x-6y=9-2
from 1 and 2
4x-6y=16
4x-6y=9
=7
4x-6y=9
by elimination method
2(2x-3y=8)-1
4x-6y=9-2
from 1 and 2
4x-6y=16
4x-6y=9
=7
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