Four Consecutive Integers

Find four consecutive integers whose sum is 86.

x = 1st consecutive integer
x + 1 = 2nd consecutive integer
x + 2 = 3rd consecutive integer
x + 3 = 4th consecutive integer

x + x + 1 + x + 2 + x + 3 = 86  {sum is 86}
4x + 6 = 86  {combined like terms}
4x = 80  {subtracted 6 from both sides}
x = 20  {divided both sides by 4}
x + 1 = 21
x + 2 = 22
x + 3 = 23

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