R12=R1*R2/(R1+R2)
R123=R3+R12=R3+R1*R2/(R1+R2)
I=ЭДС/(r+R3+R1*R2/(R1+R2))
U1=U2=U12=I*R12=ЭДС/((r+R3)*(R1+R2)/(R1*R2)+1)
I1=U1/R1=ЭДС/((r+R3)*(R1+R2)/R2+R1)=100/((0,2+18,8)*(3+2)/2+3)A=
1,98019802 A ~ 1,98 A~ 2 A
I2=U2/R2=ЭДС/((r+R3)*(R1+R2)/R1+R2)=100/((0,2+18,8)*(3+2)/3+2)A=
2,97029703 A~ 2,97 A~ 3 A