Помогите расписать на листочке 130, только все

$frac{x^2}{12y} : frac{xy}{18} = frac{x^2*18}{12y*xy} = frac{6*3*x^2}{6*2x*y^2} = frac{3x}{2y^2}$

$frac{7a}{b^2} : (49a^2)= frac{7a *1 }{b^2 *7^2a^2} = frac{1}{7ab^2}$

$27x^3 : frac{18x^5}{y^2} = frac{3^3x^3 *y^2}{1* 3^2*2 *x^5} = frac{3y^2}{2x^2}$

$frac{x+2}{y^2} : frac{x+2}{2y} = frac{x+2}{y^2} * frac{2y}{x+2} = frac{2}{y}$

$frac{a^2-3a}{4b^2} : frac{3a}{4b} = frac{a*(a-3)}{4b^2} * frac{4b}{3a} = frac{a-3}{b*3} = frac{a-3}{3b}$

$frac{5x+3y}{2c} : frac{3y+5x}{2a} = frac{5x+3y}{2c}* frac{2a}{3y+5x} = frac{2*a*(5x+3y)}{2*c*(5x+3y) } = frac{a}{c}$

$frac{x-y}{a+b} : frac{y-x}{b+a} = frac{x-y}{a+b} * frac{a+b}{-(x-y)} = frac{1}{-1} =-1$

$frac{a^2-b^2}{x+y} : frac{a-b}{x^2-y^2} = frac{(a-b)(a+b)}{x+y} * frac{(x-y)(x+y)}{a-b} = = frac{(a+b)(x-y)}{1*1} = (a+b)(x-y)$

$frac{x^2-2xy+y^2}{a^2-b^2} : frac{x+y}{a+b} = frac{(x-y)^2}{(a-b)(a+b)} * frac{a+b}{x+y} = frac{(x-y)^2}{(a-b)(x+y)}$