Question

Решите плиз срочно надо

Answer 1

1.$\frac{3x^{2} }{7y}$

2.$\frac{x-4}{(x-4)(x+4)} = \frac{1}{x+4}$

3.$\frac{(7-y)(7+y)}{3(7+y)} = \frac{7-y}{3}$

4.$\frac{(x+6)^{2} }{(x-6)(x+6)} = \frac{x+6}{x-6}$

5.$\frac{(x-3)(x^{2}+3x+9) }{x^{2}+3x+9 } = x-3$