Question

СРОЧНО ПОМОГИТЕ ПОЖАЛУЙСТА,даю 30 баллов

Answer 1

$1) \: \: \: \: \: \frac{7k}{18p} - \frac{4k}{18p} = \frac{7k - 4k}{18p} = \frac{3k}{18p} = \frac{k}{6p}$

$2) \: \: \: \: \: \frac{a - b}{2b} - \frac{a}{2b} = \frac{a - b - a}{2b} = \frac{ - b}{2b} = - \frac{1}{2} = - 0.5$

$3) \: \: \: \: \: - \frac{a - 12b}{27a} + \frac{a + 15b}{27a} = - \frac{a - 12b + a + 15b}{27a} = - \frac{2a + 3b}{27a}$

$4) \: \: \: \: \: \frac{x - 7y}{xy} - \frac{x - 4y}{xy} = \frac{x - 7y - x + 4y}{xy} = \frac{ - 3y}{xy} = - \frac{3}{x}$

$5) \: \: \: \: \: \frac{10a + 6b}{ {11a}^{3} } - \frac{6b - a}{ {11a}^{3} } = \frac{10a + 6b - 6b + a}{11 {a}^{3} } = \frac{11a}{11 {a}^{3} } = \frac{1}{ {a}^{2} }$

$6) \: \: \: \: \: \frac{ {x}^{2} - xy }{ {x}^{2} y} + \frac{2xy - {x}^{2} }{ {x}^{2}y } = \frac{ {x}^{2} - xy + 2xy - {x}^{2} }{ {x}^{2} y} = \frac{xy}{ {x}^{2}y } = \frac{1}{x}$

Answer 2

1)=К/6Р. 4)х-7-х-у/ху

2)=-2/2 5)1/а²

3) 2а+3Б/ 27а 6)1/х

/-знак деления дроби