The answer is infinite (0=0).
1. Use distributive property to multiply the parentheses. You’ll end up with 5z+12.5=5z+12.5.
2. You’ll notice the equation equals each other. 5z-5z equals zero, same for 12.5.
1.04 kilograms
1 gram = .001 kilogram
2x520= 1040
1040 x .001 = 1.04 kilograms
