Answer:
m = 3
Step-by-step explanation:
Since model ABCD has all equivalent side lengths, QRST is the same way, just smaller.
(Not sure if this is right, just the way I learned it!)
26 students
46/2=23
23 plus the 3 that didnt come equal 26 in total.
21x/2+3. Multiply everything by 2: 30x-12=21x+6. Combine like terms: 9x=18. Get the unknown by itself: 9x/9=X. 18/9=2. X is less than or equal to 2 :)