why life is at times, unfathomable

Equilibrium C = a + bYd
= a + b(Y-TA-TR)
= a + b (C+ I+G+X-TA-TR)
= a + b ( a +bYd + c+ dR +G + e + fY +gR – TA –TR)
= a + b (a +bYd + c + d(h/h+ ß'i(α +MS/iP ) -MS/iP ) + G + e + f(1/(h/i +ß) [α’ + MS/iP] – TA – TR) +[g(h/(h+ßi)] (α + MS/iP)-MS/iP- TA- TR
= a(1+b) + b²Yd +bc +( bd +g(h/(h+ßi) (α + MS/iP)-MS/iP) + G +e + f{ [α’ +MS/iP ] -2TA-2TR

And to think I actually used to like Econs. Help.