What is the answer to 5/k = 15/20 ?

The answer to 5/k = 15/20 is k= 20/3

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5/k = 15/20

\frac{5}{k} = \frac{15}{20}

k = \frac{20}{3}

Decimal Notation

k = 6.66666 \dots

Solution steps

\frac{5}{k} = \frac{15}{20}

Cross multiply

100 = k \cdot 15

Switch sides

k \cdot 15 = 100

Divide both sides by

15

k = \frac{20}{3}

Verify Solutions

Find undefined (singularity) points:

k = 0

Combine undefined points with solutions:

k = \frac{20}{3}

\frac{2 n}{4 n} = \frac{1}{2 n}

(5 k - 1)^{- 2} = k + 5

1 = \frac{10 x ^{2}}{x ^{4} + 25}

\frac{x + 1}{x ^{2} - 3} = 3

y, x = \frac{3}{2 y - 4}