the population of Concord in 1980 was 400 greater than half the population Euclid. The sum of the two populations was 29,600 less than twice the population of Euclid. What was the population of each city in 1980?
x=400*1/2y
x+y=29600-2*y
x--> Concord population
y--> Euclid population
solve for x