This promblem includes integers

suiye is right, and that way is probably even quicker, but another way to arrive at the answer is to set up an equation

four consecutive integers: **x, (x+1), (x+2), **and** (x+3)**

sum them up and get 86

**x + x+1 + x+2 + x+3 = 86**

now solve for x, the smallest one

4x + 6 = 86

4x = 80

**x = 20**

so the numbers are **20, 21, 22, and 23**