brian scored 1/10 of the points for his basketball team in the state championship game. joe scored 1/4 of…

Explanation:

Step1: Let the total number of points be $x$.

Let $x$ be the total points.

Step2: Express Brian's and Joe's points in terms of $x$.

Brian's points are $\frac{1}{10}x$, Joe's points are $\frac{1}{4}x$.

Step3: Set up the equation based on the sum of their points.

$\frac{1}{10}x+\frac{1}{4}x = 21$

Answer:

$\frac{1}{10}x+\frac{1}{4}x = 21$