若|m+3|+|n+7\2|+2|2p-1|=0,则p+2n+3M=( )初一年级有理数,绝对值,

若|m+3|+|n+7\2|+2|2p-1|=0,则p+2n+3M=( )初一年级有理数,绝对值,
若|m+3|+|n+7\2|+2|2p-1|=0,则p+2n+3M=( )
初一年级有理数,绝对值,

若|m+3|+|n+7\2|+2|2p-1|=0,则p+2n+3M=( )初一年级有理数,绝对值,
由有理数性质得：m+3=0且n+7\2=0且2p-1=0
所以：m=3、n=-7\2、p=1\2
所以：p+2n+3m=1\2+2*(-7\2）+3*3=5\2