If a camera and a lock weigh 330 grams together. Also the same camera and a crown together weighs 670 grams. Also the weight of a crown and a lock is 470 grams. What is the weight of each individual object?
If we let
x = weight of camera
y = weight of lock
z = weight of crown
we have
x+y=330
x+z=670
y+z=470
now just solve for x,y,z