1 =3,4*x+y
2 =(x+y)*z
3 =0,8*x+0,9*y-x*y
4 =(x+z)*y+0,1*z
5 =(x-z)*z+y*x
6 =(15*x^2-(7/12)*y)/(18*y+x^2)
7 =(40*y^3+(4/9)*x)/(6*x^2-18*x*y)
8 =(30*(x^3-(5/6)*y))/(5*(x^3-6*y))
1 =3,4*x+y
2 =(x+y)*z
3 =0,8*x+0,9*y-x*y
4 =(x+z)*y+0,1*z
5 =(x-z)*z+y*x
6 =(15*x^2-(7/12)*y)/(18*y+x^2)
7 =(40*y^3+(4/9)*x)/(6*x^2-18*x*y)
8 =(30*(x^3-(5/6)*y))/(5*(x^3-6*y))