I think of a number and i add 4 to it suppose i divide 80 by this sum and my answer is 16,what number did i think of?
(n + 4)/80 = 16
Multiply both sides by 80.
n + 4 = 1,280
n = 1,280 - 4
n = 1,276
Multiply both sides by 80.
n + 4 = 1,280
n = 1,280 - 4
n = 1,276