Question

Пожалуйста помогите дам много балов очень надо и срочно​

Answer 1

$\displaystyle\bf\\1)\\\\\frac{7x}{7y} =\frac{x}{y} \\\\\\2)\\\\\frac{2ax}{10ay} =\frac{2a\cdot x}{2a\cdot 5y} =\frac{x}{5y} \\\\\\3)\\\\\frac{5x^{2} y^{2}z }{15x^{2} yz}=\frac{5x^{2} yz\cdot y}{5x^{2} yz\cdot 3} =\frac{y}{3} \\\\\\4)\\\\\frac{2b-bx}{4xb} =\frac{b\cdot(2-x)}{b\cdot 4x}=\frac{2-x}{4x}$

$\displaystyle\bf\\5)\\\\\frac{5x-10y}{2a^{2} y-a^{2}x } =\frac{5\cdot(x-2y)}{a^{2}\cdot(2y-x) }=-\frac{5}{a^{2} } \\\\\\6)\\\\\frac{a^{2} -10a+25}{a^{2} x-25x} =\frac{a^{2}-2\cdot a\cdot 5+5^{2} }{x\cdot(a^{2} -25)} =\frac{(a-5)^{2} }{x\cdot(a-5)\cdot(a+5)} =\frac{a-5}{x(a+5)}$