x+17=number of times Ellis comes to bat
x=number of times Dwight comes to bat
x+10 =number of times Wade comes to bat.
we can suggest this equation:
(x+17)+(x)+(x+10)=1650
3x+27=1650
3x=1650-27
3x=1623
x=1623/3
x=541
Therefore:
x+17=number of times Ellis comes to bat: 541+17=558
x=number of times Dwight comes to bat: 541
x+10 =number of times Wade comes to bat: 541+10=551
Answer: Ellis comes to bat 558 times.