Answer:
2AgNO3 + Cu = Cu(NO3)2 + 2Ag
Step-by-step explanation:
This is a simple substitution reaction.
For the equation to be balanced, the total number of elements on each side of the equation must be equal.
The right hand side contains 2 nitrogen and 6 oxygen, to balance this on the left add 2 to the back of silver nitrate. Thus silver on the right hand side of the equation must be 2.
Thus the equation is balanced.