CEMC Fermat

Algebra Difficulty 2.1 Junior Find the answer

If $u=-6$ and $x=\frac{1}{3}(3-4 u)$ , what is the value of $x$ ?

Your answer

A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

Solution

Substituting, $x=\frac{1}{3}(3-4 u)=\frac{1}{3}(3-4(-6))=\frac{1}{3}(3+24)=\frac{1}{3}(27)=9$ .

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