Answer:
81
Step-by-step explanation:
Let the number be y.
20 less than 3 times y = 223
The expression is thus
3y - 20 = 223
Add 20 to both sides to eliminate -20 on the left
3y -20 + 20 = 223 + 20
3y = 243
Divide both sides by 3 to isolate y
3y/3 = 243/3
y = 81
The number is 81
