N=-1 distribute then isolate your variable and divide
Answer:
36
Step-by-step explanation:
summation of all the outcome
7. y = 1, AB = 1, BD = 10 and AD = 11
8. x = 5, AB = 20 and BC = 20
9. x= 5 and AB = 33
10. No, because AC = 12.5 while AB + BC = 20 (they should equal the same and they don't.)
A,B, and C are like terms because they all match. 3m and 4m because they both end in m 7n and 8n because they both end in n and 2n2 and 3n2 because they both end in n2