Question

Decide whether the given number is a solution of the given equation.Is 1 a solution of 3(c- 6) = 21?

Answer 1

We want to know if

$c=1$

Is a solution for

$3(c-6)=21$

To see if this is a solution for the equation, we just need to evaluate the equation with the given value.

$\begin{gathered} 3(1-6)=21 \\ 3(-5)=21 \\ -15=21 \end{gathered}$

Since the last statement is false(-15 IS NOT equal to 21), we can say that 1 is not a solution for this equation.