解方程:(1)4x+7y=10 (2)x+y-z=0 6x-11y+28=0 x+2y-z=3 2x-3y+2z=5(1)4x+7y=10 6x-11y+28=0 (2)x+y-z=0 x+2y-z= 2x-3y+2z=5

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解方程:(1)4x+7y=10 (2)x+y-z=0 6x-11y+28=0 x+2y-z=3 2x-3y+2z=5(1)4x+7y=10 6x-11y+28=0 (2)x+y-z=0 x+2y-z= 2x-3y+2z=5
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解方程:(1)4x+7y=10 (2)x+y-z=0 6x-11y+28=0 x+2y-z=3 2x-3y+2z=5(1)4x+7y=10 6x-11y+28=0 (2)x+y-z=0 x+2y-z= 2x-3y+2z=5
解方程:(1)4x+7y=10 (2)x+y-z=0 6x-11y+28=0 x+2y-z=3 2x-3y+2z=5
(1)4x+7y=10 6x-11y+28=0
(2)x+y-z=0 x+2y-z= 2x-3y+2z=5

解方程:(1)4x+7y=10 (2)x+y-z=0 6x-11y+28=0 x+2y-z=3 2x-3y+2z=5(1)4x+7y=10 6x-11y+28=0 (2)x+y-z=0 x+2y-z= 2x-3y+2z=5
1.X= -1 Y= 2
2.X= 5 Y = 3 Z= 2

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