Remove parentheses.
\[A(-\frac{2}{7},2)YB-1,-\frac{1}{2}\]
Simplify \(A(-\frac{2}{7},2)YB\) to \(\frac{A\times -2YB}{7},2\).
\[(\frac{A\times -2YB}{7},2)-1,-\frac{1}{2}\]
Regroup terms.
\[(\frac{-2YBA}{7},2)-1,-\frac{1}{2}\]
Move the negative sign to the left.
\[(-\frac{2YBA}{7},2)-1,-\frac{1}{2}\]
Collect like terms.
\[(-\frac{2YBA}{7},2-1),-\frac{1}{2}\]
Simplify \(2-1\) to \(1\).
\[-\frac{2YBA}{7},1,-\frac{1}{2}\]
-(2*YB*A)/7,1,-1/2
