4x+3y=6 2x-y=4用加减消元发.
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4x+3y=6 2x-y=4用加减消元发.
4x+3y=6 2x-y=4用加减消元发.
4x+3y=6 2x-y=4用加减消元发.
4x+3y=6.(1)
2x-y=4.(2)
(1)+(2)×3:
10x=18
x=1.8
带入(2)
y=-0.4
4x+3y=6 2x-y=4用加减消元发.
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