SOLUTION: what is the smallest of 3 consecutive positive integers if the product of the smallest and largest is 21 more than the 9 time the middle number?

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Question 936246: what is the smallest of 3 consecutive positive integers if the product of the smallest and largest is 21 more than the 9 time the middle number?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x,y,z.
x, x+1, x+2.

x%28x%2B2%29=21%2B9%28x%2B1%29;

Simplify and solve.