Question

using suitable property 3/8*-2/5+-3/8+3/8*3/10

Answer 1

$\frac{3}{8} \times ( \frac{ - 2}{5} ) + ( \frac{ - 3}{8} ) + \frac{3}{8} \times \frac{3}{10}$

$\frac{ - 6}{10} - \frac{3}{8} + \frac{9}{80}$

$taking \:lcm = 80$

$\frac{ - 12 - 30 + 9}{80}$

$\frac{ - 42 + 9}{80}$

$\frac{ - 33}{80}$