walk me through this pls,

Now assign multiplying factors as follows: AB+C.(1)2B+D2C+E(2)ED+F(3) Write the equations that try to balance all intermediates for generation-consumption analysis. Follow the convention of negative coefficients for consumption and positive coefficients for generation. B: x1+ x2+1 X3=0 D: x1+1 b2+1 x3=0 E: x1+1 x2+1 X3=0