What is (2/3*4/5)+2/5-3/10 ?

The solution to (2/3*4/5)+2/5-3/10 is 19/30

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(2/3*4/5)+2/5-3/10

(\frac{2}{3} \cdot \frac{4}{5}) + \frac{2}{5} - \frac{3}{10}

\frac{19}{30}

Solution steps

(\frac{2}{3} \cdot \frac{4}{5}) + \frac{2}{5} - \frac{3}{10}

Follow the PEMDAS order of operations

Calculate within parentheses

(\frac{2}{3} \cdot \frac{4}{5}) : \frac{8}{15}

= \frac{8}{15} + \frac{2}{5} - \frac{3}{10}

Add and subtract (left to right)

\frac{8}{15} + \frac{2}{5} - \frac{3}{10} : \frac{19}{30}

= \frac{19}{30}

25 m^{2} - 81 n^{2}

5 x^{2} + 7 x - 2 = 0

17.95 + 0.82 x = 172.11

k (k + 40) - 10 k + 20 k = 490

\frac{c ^{2} d ^{5}}{c ^{5} d}