1) 3.4+2y=7(y-2.3)
2) 0.2(7-2y)=2.3-0.3*(y-6)

3.4+2y=7(y-2.3)3.4+2y=7y-16.13.4+16.1=7y-2y19.5=5yy=19.5:5y=3.90.2(7-2y)=2.3-0.3(y-6)1.4-0.4y=2.3-0.3y-1.81.4-2.3+1.8=-0.3y+0.4y0.9=0.1yy=0.9:0,1y=9