若/×-2/+/y+3/+/z-5/=0计算:(1)x,y,z的值.(2)求/x/+/y/+/z/的值怎样解
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若/×-2/+/y+3/+/z-5/=0计算:(1)x,y,z的值.(2)求/x/+/y/+/z/的值怎样解若/×-2/+/y+3/+/z-5/=0计算:(1)x,y,z的值.(2)求/x/+/y/+
若/×-2/+/y+3/+/z-5/=0计算:(1)x,y,z的值.(2)求/x/+/y/+/z/的值怎样解
若/×-2/+/y+3/+/z-5/=0计算:(1)x,y,z的值.(2)求/x/+/y/+/z/的值
怎样解
若/×-2/+/y+3/+/z-5/=0计算:(1)x,y,z的值.(2)求/x/+/y/+/z/的值怎样解
因为绝对值大于等于0
三个大于等于0的数相加等于0
说明每个数都等于0
所以 x -2 = 0 ,y + 3 = 0 ,z - 5 = 0
所以 x = 2 ,y = -3 ,z = 5
| x | + | y | + | z |
= 2 + 3 + 5
= 10
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