What is 7/5+3/10-7+7/4 ?

The solution to 7/5+3/10-7+7/4 is -71/20

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7/5+3/10-7+7/4

\frac{7}{5} + \frac{3}{10} - 7 + \frac{7}{4}

- \frac{71}{20}

Solution steps

\frac{7}{5} + \frac{3}{10} - 7 + \frac{7}{4}

Follow the PEMDAS order of operations

Add and subtract (left to right)

\frac{7}{5} + \frac{3}{10} = \frac{17}{10}

= \frac{17}{10} - 7 + \frac{7}{4}

\frac{17}{10} - 7 = - \frac{53}{10}

= - \frac{53}{10} + \frac{7}{4}

- \frac{53}{10} + \frac{7}{4} = - \frac{71}{20}

= - \frac{71}{20}

7 (x - 3) - 5 (x^{2} - 1) = x^{2} - 5 (x + 2)

\frac{2 3}{2}

\frac{2}{2} - 1

30 x^{2} - 62 x + 28 = 0

24 x - 9