Emelia discovered that if she takes three-fourths of her age and adds 9, it produces the same result as when she takes one-fourth of her age and adds 21. How old is Emelia?

Question

calculusxy · Answer

I have the equation for this as:
$$\frac{ 3 }{ 4 }x+9=\frac{ 1 }{ 4 }x+21$$

confluxepic · Answer

Did you try subtracting 9 on both sides and going from there?

calculusxy · Answer

I did try but then I had 3/4x left. I didn't know how to isolate x with that.

confluxepic · Answer

Divide by 3/4 on both sides. Right?

calculusxy · Answer

Wait... I want to show you what I did so that you can catch the mistake. Is that okay?

confluxepic · Answer

Ok.

calculusxy · Answer

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