Question

Solve -9.4 Σ 1.7x + 4.2.Ox4 -8Ο χ 48Ox2-8Ο χ 2 8

Answer 1

$\begin{gathered} -9.4\ge1.7x+4.2 \\ \Rightarrow1.7x+4.2\leq-9.4 \\ \Rightarrow1.7x\leq-9.4-4.2=-13.6 \\ \Rightarrow x\leq\frac{-13.6}{1.7} \\ \Rightarrow x\leq-8 \end{gathered}$