Lesson 1
Practice Problem Set 3 - Solutions

Perform the indicated operations:

10. $\left(-8\right)-\left(7\right)+\left(3\right)-\left(2\right)=-15+\left(3\right)-\left(2\right)=-12-\left(2\right)=-14$

11. $\left(-2\right)\left(6\right)\left(-3\right)=-12\left(-3\right)=36$

12. ${\left(-3\right)}^4=3^4=81$

13. $-3^4=-\left(3^4\right)=-\left(81\right)=-81$

14. $\frac{\left(-18\right)\left(12\right)}{\left(-9\right)\left(6\right)}=\frac{\stackrel{2}{\cancel{\left(18\right)}}\stackrel{2}{\cancel{\left(12\right)}}}{\underset{1}{\cancel{\left(9\right)}}\underset{1}{\cancel{\left(6\right)}}}=\frac{2·2}{1·1}=4$