Question

Calcule a razão :
Por Favor preciso disso pra manhã...

Answer 1

x-y = 45
x/y = 4/1
x=4k
y=k
4k-k =45
3k = 45
k = 15
Logo :x = 60
y=15

Answer 2

$\begin{cases}x-y=45\\ \dfrac{x}{y} =4\end{cases}\\\\\\\\ x-y=45\to~~ x=y+45\\\\\\\\ \dfrac{x}{y} =4\to~~ \dfrac{y+45}{y} =4\to~~multiplique~~cruzado\to~~ 4y=y+45\to\\ 4y-y=45\to~~ 3y=45\to~~y= \dfrac{45}{3}\to~~ \boxed{y=15 } \\\\\\\\ x=y+45\to~~ x=15+45\to~~\boxed{x=60 }\\\\\\\\\\ \large\boxed{\boxed{S=\left\{~60~;~15~ \right\}}}$