Which numbers should go in the blanks when this equation is balanced? _pb(no3)2 +_nacl-> nano3+_pbcl2

First, you need a blank in front of NaCl or else you cannot balance this equation.  However, if you do put a blank there:

1, 2, 2, 2

Explanation:

Here is the balanced equation

1 Pb(NO3)2 + 2 NaCl-> 2 NaNO3+ 1 PbCl2

take a better picture and ill do it