The sum of two consecutive numbers is 21. What are the two numbers?
x = first consecutive number
x + 1 = second consecutive number x + x + 1 = 21 {sum of the two numbers is 21} 2x + 1 = 21 {combined like terms} 2x = 22 {subtracted 1 from each side} x = 11 {divided each side by 2} x + 1 = 10 {substituted 11, in for x, into x + 1} 11 and 10 are the two consecutive numbers Ask the House
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