Cassandra measured her high at 63 inches that is 6 inches less than three times her younger brother’s height. How tall is her younger brother right in equation in the form px+q=r to represent this problem.
Let's say Cassandra's younger brother's height is x inches.
Then three times her younger brother's height would be 3x inches.
And 6 inches less than three times her younger brother's height would be 3x - 6 inches.
Cassandra's height is 63 inches, so we can set up the equation:
3x - 6 = 63.
This equation represents the problem using the form px + q = r.