已知x与-2y互为相反数, y与3z互为相反数,则1/2x+y+6z+3的值是____
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![已知x与-2y互为相反数, y与3z互为相反数,则1/2x+y+6z+3的值是____](/uploads/image/z/13352088-48-8.jpg?t=%E5%B7%B2%E7%9F%A5x%E4%B8%8E-2y%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C+y%E4%B8%8E3z%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E5%88%991%EF%BC%8F2x%2By%2B6z%2B3%E7%9A%84%E5%80%BC%E6%98%AF____)
已知x与-2y互为相反数, y与3z互为相反数,则1/2x+y+6z+3的值是____
已知x与-2y互为相反数, y与3z互为相反数,则1/2x+y+6z+3的值是____
已知x与-2y互为相反数, y与3z互为相反数,则1/2x+y+6z+3的值是____
依题意可得
X-2y=0
y+3z=0
ze
x=2y
z=-y/3
所以
原式
=0.5X+Y+6Z+3
=Y+Y-2Y+3
=3