multiply the ones in bracket by the LT = 7Γ L + L Γ RST = 7L + LRSmaking S the subject by transferring 7L to the left hand side of the equation.thusT - 7L = LRSdividing through by LR[tex] \frac{T}{LR} - \frac{7L}{LR} = S[/tex][tex] S= \frac{T}{LR} - \frac{7}{R} [/tex]