Consecutive intergers are 1 away from each other so numbers are x,x+1,x+2
average is found by adding the numbers up and dividng the total by the number of numbers you have so we add x+x+1+x+2 up and divide it by 3 (3 numbers) x+x+1+x+2=x+x+x+1+2=3x+3 (3x+3)/3=53 [3(1x+1)]/3=53 3/3 times 1x+1=52 1x+1=53 subtract 1 from both sides x=52
subsitute x+1 is the second x+2 is the third x+1=52+1=53 x+2=52+2=54
