How old am I if: 210 reduced by 3 times my current age is 4 times my current age?

How old am I if: 210 reduced by 3 times my current age is 4 times my current age?

Let your current age be a. We're given:

• 210 reduced by 3 times current age = 210 - 3a
• 4 times current age = 4a
• The word is means equal to. So we set 210 - 3a equal to 4a

210 - 3a = 4a

To solve for a, we type this equation into our search engine and we get:
a = 30