Question

2/5x-3/8+1/16+3/5×-3/8​

Answer 1

Step-by-step explanation:

$\frac{2}{5} x - \frac{3}{8} + \frac{1}{16} + \frac{3}{5} \times - \frac{3}{8} \\ = \frac{2}{5} x - \frac{3}{8} + \frac{1}{16} + ( - \frac{9}{40} ) \\ = \frac{2}{5} x - \frac{3}{8} + \frac{1}{16} - \frac{9}{40} \\ = \frac{2}{5} x - (\frac{3 \times 2}{8 \times 2} + \frac{1}{16}) - \frac{9}{40} \\ = \frac{2}{5} x - (\frac{6}{16} + \frac{1}{16}) - \frac{9}{40} \\ = \frac{2}{5} x - \frac{7}{16} - \frac{9}{40} \\ = \frac{2}{5} x - \frac{7 \times 5}{16 \times 5} - \frac{9 \times 2}{40 \times 2} \\ = \frac{2}{5} x - \frac{30}{80} - \frac{18}{8} \\ = \frac{2}{5} x$