非负数:5,3二分之一,0,pai,+2.5,有x=5个
负整数:-1,-2,有 y=2个
整数:5,0,-1,-2,有 z=4个
有理数:-3.6,5,-2分之5,3二分之一,0,-1,-2,+2.5,有 w=8个
x+y+z+w=5+2+4+8=19
非负数:5,3二分之一,0,pai,+2.5,有x=5个
负整数:-1,-2,有 y=2个
整数:5,0,-1,-2,有 z=4个
有理数:-3.6,5,-2分之5,3二分之一,0,-1,-2,+2.5,有 w=8个
x+y+z+w=5+2+4+8=19