What is (4k-20)/(15-3k) ?

The solution to (4k-20)/(15-3k) is -4/3

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simplify (4k-20)/(15-3k)

simplify

\frac{4 k - 20}{15 - 3 k}

- \frac{4}{3}

Decimal Notation

- 1.33333 \dots

Solution steps

\frac{4 k - 20}{15 - 3 k}

Factor

4 k - 20 : 4 (k - 5)

= \frac{4 ( k - 5 )}{15 - 3 k}

Factor

15 - 3 k : 3 (5 - k)

= \frac{4 ( k - 5 )}{3 ( 5 - k )}

3 (5 - k) = - 3 (k - 5)

= \frac{4 ( k - 5 )}{- 3 ( k - 5 )}

Cancel the common factor:

k - 5

= \frac{4}{- 3}

Apply the fraction rule:

\frac{a}{- b} = - \frac{a}{b}

= - \frac{4}{3}

(3 + i) (1 - i)

- 19 x + 7 + 15 x + 11

i^{810}

- cos^{2} (x) - sin^{2} (x)

- (4 X - (4 - (3 - 2 X)) + 5 X)