Question

-(1 – 7a) = 3(8a - 6)

Answer 1

`\begin{gathered} -(1-7a)=3(8a-6) \\ \text{Multiply the left parenthesis by negative 1} \\ -1+7a=3(8a-6) \\ \text{Next you multiply the right parenthesis by 3} \\ -1+7a=24a-18 \\ \text{Collect all like terms, which means;} \\ \text{The unknown terms will move to one side of the equation and} \\ \text{the known numbers will move to the other side} \\ -1+18=24a-7a \\ \text{Note that when a positive value crosses to the other side of an equation} \\ it\text{ becomes negative, and vice versa for a negative value} \\ 17=17a \\ \text{Divide both sides by 17} \\ (17)/(17)=(17a)/(17) \\ 1=a \end{gathered}`