Solve {c}{3m_{1}-2m_{2}=u}{-2m_{1}+5m_{2}-2m_{3}=-5}{-2m_{2}+4m_{3}=-u+5}{1+m_{1}-m_{3}=0}{m-m_{2}+m_{3}=0}

$$\left. \begin{array} { c } { 3 m _ { 1 } - 2 m _ { 2 } = u } \\ { - 2 m _ { 1 } + 5 m _ { 2 } - 2 m _ { 3 } = - 5 } \\ { - 2 m _ { 2 } + 4 m _ { 3 } = - u + 5 } \\ { 1 + m _ { 1 } - m _ { 3 } = 0 } \\ { m - m _ { 2 } + m _ { 3 } = 0 } \end{array} \right.$$

Solve for m_1, m_2, u, m_3, m

$$m_{1}=-\frac{7}{19}\approx -0.368421053$$

$$m_{2}=-\frac{17}{19}\approx -0.894736842$$

$$u=\frac{13}{19}\approx 0.684210526$$

$$m_{3}=\frac{12}{19}\approx 0.631578947$$

$$m = -\frac{29}{19} = -1\frac{10}{19} \approx -1.526315789$$