Pls answer these three questions of subtraction,multiplication and div

1.	Pls answer these three questions of subtraction,multiplication and division
Answer» $\textbf{(c) <klux>MULTIPLICATION</klux>}$ $\sf \colorbox{pink} {Solution: - }$ $∴ \frac{ - 8}{9} \times \left( \frac{ - 4}{7} \right) \] = \frac{32}{63}$ $\textbf{And} \: \: \:$ $\left( \frac{ - 4}{7} \right) \] \times \left( \frac{ - 8}{9} \right) \] = \frac{32}{63}$ $∴ \frac{ - 8}{9} \times \left( \frac{ - 4}{7} \right) \] = \left( \frac{ - 4}{7} \right) \] \times \left( \frac{ - 8}{9} \right) \] = \frac{32}{63}$ THEREFORE multiplication is COMMUTATIVE RATIONAL NUMBERS $\\ \\ \\ \\ \sf \colorbox{gold} {\red(ANSWER ᵇʸ ⁿᵃʷᵃᵇ⁰⁰⁰⁸}$