Chapter 3 - Solving Inequalities - 3-3 Solving Inequalities Using Multiplication or Division - Practice and Problem-Solving Exercises - Page 182: 43

4

To find the missing term in the first equation, transform the second equation so that the left side is -8u. $u\geq-0.5\longrightarrow$ multiply both sides by -8; reverse the inequality $u\times-8\leq-0.5\times-8\longrightarrow$ multiply $-8u\leq4$ The missing term on the right side of the first equation is 4.