Answer:
Step-by-step explanation:
1) 8(a + 2) = 5a +16 + 3a.
 8a + 16  = 8a +16
      8a - 8a = 16 - 16
So, one solution  a =0
2)6m + 2 – 4m = 2(m + 2)
     2m  + 2  = 2m + 4
     so, no solution.
3) 3(z + 3) = 7 + 3z + 6 - Z​
3z + 9 Â = 13 +2z
3z - 2z = 13 - 9
    z  = 4
So, one solution