(Solved): Consider this Reduced-Row Echelon Form (RREF) of the augmented matrix of a system of linear equatio ...

Consider this Reduced-Row Echelon Form (RREF) of the augmented matrix of a system of linear equations: \[ \left[\begin{array}{ccc|c} 1 & 0 & 3 / 4 & 1 / 4 \\ 0 & 1 & -9 / 8 & -7 / 8 \\ 0 & 0 & 0 & 0 \end{array}\right] \] In the entry boxes provided below, enter the solutions for variables \( x_{1} \) and \( x_{2} \) in terms of variable \( x_{3} \) (one digit per box), where you will need to determine the coefficient of \( x_{3} \) and the value of the constant in each equation.