Answer :
Step-by-step explanation:
1. 6s + 2s - 3s - 6= 5s-6
2. 10t - 4t -6 + 5t= 11t-6
3. 18r + 18r + 9r - 3r = 42r
4. 20 - 4q + 40r - 16 = 4 - 4q + 40r
5. 17st - 16s + t = 17st - 16s + t
6. 101+101x - x = 101 + 100x
7. 16a2 - 14a + a2 - 3a= 17a2 - 17a
8. 14t + 14t + t =29t
9. r + s + rs + s + rs + s= r +3s + 2rs
10. 54 pt - 3p + 4t - 3pt = 51pt - 3p + 4t
11. 14x2 + 3x2 - x =17x2 - X
12. 101c - 5c +4c =100c
13. 12q - 4 + 10q - 4q +9 =18q + 5
14. 21k - 20k + 3k =4k
15. 181x + 91x - 23x =249x