x1:4x-3y=8;y=7-5x;2:2x-7y=8,3x-8y-10=0;3:4x-y=-1;4:5x-10y+15
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x1:4x-3y=8;y=7-5x;2:2x-7y=8,3x-8y-10=0;3:4x-y=-1;4:5x-10y+15=0;5:2x-4y=6,3x+2y=27;6:3y=x+5,2x+5y=23
1:2x+3y=7,3x-5y=1;2:3x+5y=5,3x-4y=23;3:3x+5y=5,3x-4y=23;4:5x+y=7,3x-y=1;5:4x-3y=5,4x+6y=14;6:6x+7y=5,6x-7y=19;7:0.5x-3y=-1,-二分之一x+5y=3
1:2x+3y=7,3x-5y=1;2:3x+5y=5,3x-4y=23;3:3x+5y=5,3x-4y=23;4:5x+y=7,3x-y=1;5:4x-3y=5,4x+6y=14;6:6x+7y=5,6x-7y=19;7:0.5x-3y=-1,-二分之一x+5y=3
什么意思?
再问: tangram_guid_1358503626031
再答: 1:2x+3y=7,3x-5y=1; x= 2 y=1 2:3x+5y=5,3x-4y=23; x= 5 y=-2 3:3x+5y=5,3x-4y=23; x= 5 y=-2 4:5x+y=7,3x-y=1; x=1 y=2 5:4x-3y=5,4x+6y=14; x= 2 y=1 6:6x+7y=5,6x-7y=19; x= 2 y=-1 7:0.5x-3y=-1,-二分之一x+5y=3 x= 4 y=1
再问: tangram_guid_1358503626031
再答: 1:2x+3y=7,3x-5y=1; x= 2 y=1 2:3x+5y=5,3x-4y=23; x= 5 y=-2 3:3x+5y=5,3x-4y=23; x= 5 y=-2 4:5x+y=7,3x-y=1; x=1 y=2 5:4x-3y=5,4x+6y=14; x= 2 y=1 6:6x+7y=5,6x-7y=19; x= 2 y=-1 7:0.5x-3y=-1,-二分之一x+5y=3 x= 4 y=1
x1:4x-3y=8;y=7-5x;2:2x-7y=8,3x-8y-10=0;3:4x-y=-1;4:5x-10y+15
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