РЕШИТЕ:1) 2/(x - y) - 3/(x + y) 3) (b + 3)/(b - 3) + (b - 3)/(b + 3) 2) (7a)/(a - 1) - (2a)/(a + 1) 4) (d - 1)/(d - 3) + (d + 1)/(3 + d) 5) (3m)/(cx + c ^ 2) + 4/(xc + x ^ 2) 6) (a - x)/(d ^ 2 - dx) + (a - d)/(dx - x ^ 2) 7) (a ^ 2 + b ^ 2)/(a ^ 2 - b ^ 2) - b/(a + b) + b/(b - a)