Question

ayuda, es urgente doy coronita ​

Answer 1

Respuesta:

Explicación paso a paso:

$a)x-3y=6\\\\x-3y+3y=6+3y\\\\x=6+3y$

$b)3x+4y=x-y+4\\\\3x+4y-4y=x-y+4-4y\\\\3x+4y-4y=x-y+4-4y\\\\3x-x=-5y+x+4-x\\\\2x=-5y+4\\\\\frac{2x}{2}=-\frac{5y}{2}+\frac{4}{2}\\\\x=\frac{-5y+4}{2}$

$c)3x-7y=9\\\\3x-7y+7y=9+7y\\\\3x=9+7y\\\\\frac{3x}{3}=\frac{9}{3}+\frac{7y}{3}\\\\x=\frac{9+7y}{3}$

$d) y=8x-1\\\\\mathrm{X\:intersecta}:\:\left(\frac{1}{8},\:0\right),\:\mathrm{Y\:intersecta}:\:\left(0,\:-1\right)$

$e)\frac{d}{dx}\left(\frac{1}{2x}-3\right)\\\\\frac{d}{dx}\left(\frac{1}{2x}\right)-\frac{d}{dx}\left(3\right)\\\\-\frac{1}{2x^2}-0\\\\-\frac{1}{2x^2}$

$f)x-y=-2\\\\x-y+y=-2+y\\\\x=-2+y$

$g)4x-3y=18\\\\4x-3y+3y=18+3y\\\\4x=18+3y\\\\\frac{4x}{4}=\frac{18}{4}+\frac{3y}{4}\\\\x=\frac{18+3y}{4}$

$h)5x+10y=50\\\\5x+10y-10y=50-10y\\\\5x=50-10y\\\\\frac{5x}{5}=\frac{50}{5}-\frac{10y}{5}\\\\x=2\left(-y+5\right)$