y=c+i+g=80+0.75(y-t)+50+0.1y+200=330+0.85y-0.75(-20+0.2y)=345+0.7y=y0.3y=345y=1150t=-20+0.2*1150=210c=80+0.75*(1150-210)=785i=50+0.1*1150=165
