Answer:
![(-7)(-1.2)\leftrightarrow 8.4](https://img.qammunity.org/2020/formulas/mathematics/high-school/du2g30zgkg141ggue61al4ob2bdoxzgztb.png)
![(-2(1)/(2))(-2)\leftrightarrow 5](https://img.qammunity.org/2020/formulas/mathematics/high-school/dl4olvykmm9ac8qr31ywqps1yaarlvxajt.png)
![(2.5)(-2)\leftrightarrow -5](https://img.qammunity.org/2020/formulas/mathematics/high-school/nmef3imlh42tkdxup89lwc81zpx0qpag2w.png)
![(7)(-1.2)\leftrightarrow -8.4](https://img.qammunity.org/2020/formulas/mathematics/high-school/fmwpsic30rbmsf1dzpn67h0bt9nhv1uzvu.png)
Explanation:
Product rule of signs:
(+)(+) = (+)
(+)(-) = (-)
(-)(+) = (-)
(-)(-) = (+)
Using these signs simplify the given expression.
![(-7)(-1.2)=8.4](https://img.qammunity.org/2020/formulas/mathematics/high-school/jxyo7jhp35fpgf5pemv660bgsc1b1z6k7c.png)
It means (-7)(-1.2) is equivalent to 8.4.
![(-2(1)/(2))(-2)=(-(5)/(2))(-2)=5](https://img.qammunity.org/2020/formulas/mathematics/high-school/u79xusfazvu4vamea9ja73syshuow01j6u.png)
It means
is equivalent to 5.
![(2.5)(-2)=-5](https://img.qammunity.org/2020/formulas/mathematics/high-school/6ha2qym3d0kat7hfjpyj7w78ajmdjt9dy1.png)
It means (2.5)(-2)- is equivalent to -5.
![(7)(-1.2)=-8.4](https://img.qammunity.org/2020/formulas/mathematics/high-school/wxjldzn5llmbxs3mb9cpvr7505rmuvieea.png)
It means (7)(-1.2) is equivalent to -8.4.