4x=3y+4z=5y+x+y+z=36
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x=9y=12z=15
咨询记录 · 回答于2023-02-25
4x=3y+4z=5y+x+y+z=36
4x=3y4z=5yx+y+z=36
x=9y=12z=15
4x=3y+4z=5y+x+y+z=36解题4x=3y(1)4z=5y(2)x+y+z=36(3)由(1)和(2)得x=3/4yz=5/4y带入(3)得3/4y+y+5/4y=36y(3/4+1+5/4)=363y=36y=36÷3y=12所以x=9z=15
4x=3y+4z=5y+x+y+z=36解题4x=3y(1)4z=5y(2)x+y+z=36(3)由(1)和(2)得x=3/4yz=5/4y带入(3)得3/4y+y+5/4y=36y(3/4+1+5/4)=363y=36y=36÷3y=12所以x=9z=15