Приведите дроби к общему знаменателю:1) 2x/y⁴ и 3/y 2) 2b/a⁵ и 6/y 3) 2/3xy² и 7/6x²y 4)...

Решите задачу:

$1) \frac{2x}{y^{4}}, \frac{3y^{3}}{y^{4}} \\ 2) \frac{2by}{a^{5}y}, \frac{6a^{5}}{a^{5}y} \\ 3) \frac{4x}{6x^{2}y^{2}}, \frac{7y}{6x^{2}y^{2}} \\ 4) \frac{28x}{7x(x+5)},\frac{3(x+5)}{7x(x+5)}=\frac{3x+15}{7x^{2}+35x} \\ 5) \frac{a}{2(a+1)},\frac{6}{2(a+1)} \\ 6) \frac{2x*(4x+4y)}{3(x-y)4(x+y)}= \frac{8x^{2}+8xy}{12(x^{2}-y^{2})}=\frac{8x^{2}+8xy}{12x^{2}-12y^{2}}, \\ \frac{3y*(3x-3y)}{3(x-y)4(x+y)}= \frac{9xy-9y^{2}}{12(x^{2}-y^{2})}=\frac{9xy-9y^{2}}{12x^{2}-12y^{2}}$