What is (2 2/5-1)\times 1/7 ?

The solution to (2 2/5-1)\times 1/7 is 1/5

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(2 2/5-1)\times 1/7

(2 \frac{2}{5} - 1) \cdot \frac{1}{7}

\frac{1}{5}

Solution steps

(2 \frac{2}{5} - 1) \cdot \frac{1}{7}

Convert mixed numbers to improper fractions:

2 \frac{2}{5} = \frac{12}{5}

= (\frac{12}{5} - 1) \cdot \frac{1}{7}

Follow the PEMDAS order of operations

Calculate within parentheses

(\frac{12}{5} - 1) : \frac{7}{5}

= \frac{7}{5} \cdot \frac{1}{7}

Multiply and divide (left to right)

\frac{7}{5} \cdot \frac{1}{7} : \frac{1}{5}

= \frac{1}{5}

4 + 8 \times (- 5)

- 4 (3)^{2} + 11

(- 3)^{5} + 4 (- 3)^{4} + 8 (- 3)^{3} - 2 (- 3)^{2}

2 (3 - 4) - (- 3)^{2}

4 (- 4)^{2}