Twenty less than thrice a number is 223. what is the number

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

So I just did 3x-20=223

3x=243

x=243/3

x=81

so the answer would be 81