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One-seventh of a number is 3. What is the number?

1 Answer

Serena D. · NJ

Mar 21, 2018

21

Explanation:

I'll use $n$ $n$ to express the unknown number.

$\frac{1}{7} \cdot n = 3 \to$ $1/7*n=3 rarr$ One-seventh times the number (or the number divided by $7$ $7$ ) is three.

$n = 21 \to$ $n=21 rarr$ Divide each side by $\frac{1}{7}$ $1/7$ , the same as multiplying by $7$ $7$ .

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