Answer: n = 3.6
Step-by-step explanation: When solving an equation that contains decimals, we want to get rid of the decimals as soon as possible.
Notice that 1.2 is taken to the tenths place
but 0.68 is taken to the hundredths place.
To get rid of all decimals in the equation, multiply both
sides by the greatest power of 10 that is required.
So here we multiply both sides by 100 which
moves all decimals 2 places to the right.
So we have (100)(1.2n + 0.68) = (5)(100).
This gives us 120n + 68 = 500.
Now subtract 68 from both sides to get 120n = 432.
Dividing both sides by 120, we find that n = 3.6.
