Помогите пожалуйста,я буду очень благодарна

1) [latex] \frac{3}{x+y} [/latex] - [latex] \frac{5}{x} [/latex] [latex] \frac{3x-5(x+y)}{x(x+y)} [/latex] [latex] \frac{3x-5x-5y}{x(x+y)} [/latex] [latex] \frac{-2x-5y}{x(x+y)} [/latex] 2) [latex] \frac{4}{a-b} [/latex] + [latex] \frac{1}{a} [/latex] [latex] \frac{4a+a-b}{a(a-b)} [/latex] [latex] \frac{5a-b}{a(a-b} [/latex] 529 1) [latex] \frac{7x}{2(x-1} [/latex] + [latex] \frac{5x}{x-1} [/latex] [latex] \frac{7x + 10x}{2(x-1} [/latex] [latex] \frac{17x}{2(x-1} [/latex] 2) [latex] \frac{9a}{4(a+2)} [/latex] - [latex] \frac{1}{a+2} [/latex] [latex] \frac{9a -4}{a + 2} [/latex]