Y add -6.9 add add mul -0.9510000000000001 mul add mul -0.502 x_1 mul 0.09 x_4 x_1 mul -2.9000000000000004 div sub mul -72.10000000000001 x_2 mul -0.22 inv sub mul 3.68 x_0 mul 0.745 x_2 x_3 sub mul 2.8000000000000003 x_1 mul 0.596 x_2