Answer:
We get the value of a:
![\mathbf{a<-9}](https://img.qammunity.org/2022/formulas/mathematics/high-school/5wzcuddu026of6622h2n1fizp19g84l2fr.png)
Explanation:
We have to solve the inequality
![1<(a+7)/(-2)](https://img.qammunity.org/2022/formulas/mathematics/high-school/9hyxw5a89u999de778xbcxrd1y2i2pc0qt.png)
So, solving the inequality and finding value of a
First step is to switch both sides and for doing so, the inequality will be reversed
![(a+7)/(-2)>1](https://img.qammunity.org/2022/formulas/mathematics/high-school/tuvl0zi9xq4gyjhq1fik32ju8a9oskwqn1.png)
Multiply both sides by -2, as we are multiplying by a negative number, the inequality will be reversed
![(a+7)/(-2)* -2<1* -2](https://img.qammunity.org/2022/formulas/mathematics/high-school/m9sbfe543bigaodjm6nhgbm89m05ub5myq.png)
![a+7 < -2](https://img.qammunity.org/2022/formulas/mathematics/high-school/s0bt3m70tw2qbdul26x008inr9pi641tit.png)
Now, subtracting both sides by 7, to find value of a
![a+7-7<-2-7\\a<-9](https://img.qammunity.org/2022/formulas/mathematics/high-school/cn1udrgmv9103ofzc3hqq40sinq0djgdkm.png)
We get the value of a:
![\mathbf{a<-9}](https://img.qammunity.org/2022/formulas/mathematics/high-school/5wzcuddu026of6622h2n1fizp19g84l2fr.png)