x + y = 32 {sum of two numbers is 32 x - y = 14 {difference is 14} ----------- 2x = 46 {added the two equations together} x = 23 {divided both sides by 2}
x + y = 32 {top equation} 23 + y = 32 {substituted 23, in for x, into top equation} y = 9 {subtracted 23 from both sides}