若|m+3|+|n-7/2|+|2p-1|=0,则p+2n+3m的值为

若|m+3|+|n-7/2|+|2p-1|=0,则p+2n+3m的值为
若|m+3|+|n-7/2|+|2p-1|=0,则p+2n+3m的值为

若|m+3|+|n-7/2|+|2p-1|=0,则p+2n+3m的值为
有|m+3|=0 ,|n-7/2|=0,|2p-1|=0
∴m=-3
n=3.5
p=0.5
p+2n+3m=-1.5

绝对值全为非负值，所以由原式可得m+3=0,n-7/2=0,2p-1=0,解得：m=-3,n=7/2,p=1/2，所以p+2n+3m=1/2+2*7/2+3*(-3)=-3/2