Question

For each value of w, determine whether it is a solution to 9-6w= 21.Is it a solution?ХwYesNo-6OO9-2oO10

Answer 1

$\begin{gathered} 9-6w=21\rightarrow6w=9-21=-12 \\ w=-\frac{12}{6}=-2 \end{gathered}$

so the only solution is -2