Question 943523
H= hundreds digit; O=ones digit=H-2; T=tens digit=O+3=H+1
H+T+O=20 (sum of digits is 20)
H+(H+1)+(H-2)=20
3H-1=20  Add 1 to each side
3H=21   Divide each side by 3
H=7 ANSWER 1 Hundreds digit is 7
T=H+1=8 ANSWER 2 Tens digit is 8
O=H-2=5 ANSWER 3 Ones digit is 5
FINAL ANSWER the number is 785