✔ 最佳答案
> restart;
> eq1 := x1-69 = y1+45;
> eq2 := x2-77 = y2-17;
> eq3 := x3+35 = y3+16;
> eq4 := y4+37 = x4+13;
> eq5 := y5+44 = x5+40;
> eq6 := x6+y6 = y6+38;
> eq7 := x7+43 = 45-y7;
> eq8 := x8+15 = y8+25;
> eq9 := x9+91 = 108-y9;
> solve({eq1, eq2, eq3, eq4, eq5, eq6, eq7, eq8, eq9}, {x1, x2, x3, x4, x5, x6, x7, x8, x9});
{x1 = 114 + y1,
x2 = 60 + y2,
x3 = -19 + y3,
x4 = y4 + 24,
x5 = y5 + 4,
x6 = 38,
x7 = 2 - y7,
x8 = 10 + y8,
x9 = 17 - y9}