Question

find the rational number in closure properties 1) 3/8+(-5/7) (addition , subtraction, division,multiplication )​

Answer 1

Step-by-step explanation:

Closure property under addition.

$\frac{3}{8} + ( \frac{ - 5}{7} ) \\ \\ = lcm = 56 \\ \\ = \frac{21 - 40}{56} \\ \\ = \frac{ - 19}{40}$