(Solved): Solve the system by finding the reduced row-echelon form of the augmented matrix {4x1+2x2 ...

Solve the system by finding the reduced row-echelon form of the augmented matrix $\{\begin{array}{l}?4x_1+2x_2?4x_3=?20\\ ?2x_1?2x_2+10x_3=2\end{array}$ reduced row-echelon form: How many solutions are there to this system? A. None B. Exactly 1 C. Exactly 2 D. Exactly 3 E. Infinitely many F. None of the above If there is one solution; give its coordinates in the answer spaces below If there are infinitely many solutions, enter $t$ in the answer blank for $x_3$, enter a formula for $x_2$ in terms of $t$ in the answer blank for $x_2$ and enter a formula for $x_1$ in terms of $t$ in the answer blank for $x_1$. If there are no solutions, leave the answer blanks for $x_1,x_2$ and $x_3$ emply $x_1=r$ $I_2=$ ris =