$V{R}_2=10v$

Problem $+220$ PPss: Apply mesh analysis to write the equations for the mesh currents $I_1$

$P=-1600$

$12\mathrm{.}13($don$\text{'}$t solve$).$ Then assume you have the values of these mesh currents, write the equations that can be used to solve $I_{1,}{I}_3,V_R,V_{R2}$ in terms of $11,12,13,$ and the power supplied by $5-1$ source$($don$\text{'}$t solve$).$