Today is my birthday and I'm three times older than I was six years ago. What is my age?
Let's be accurate as possible and think first.
9
We know that my age divided by three is equal to my age minus six therefore X / 3 = X - 6 where X = My age.

This means that X = 3X - 18 because we can multiply both sides by 3.

This also means that - 2X = - 18 because we can subtract 3X from the right side.

Therefore X = 9 because - 18 / - 2 = 9.

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So, the final answer is 9