Question

Daca x/y=3/4,y != 0,atunci 2x+3y/4x+y=?
!= inseamna diferit

Answer 1

$\dfrac{x}{y} =\dfrac{3}{4}=>\boxed{x = \dfrac{3y}{4}}$

$\dfrac{2 \cdot \dfrac{3y}{4} + 3y}{4 \cdot \dfrac{3y}{4} + y} =$

$\dfrac{ \not2 \cdot \dfrac{3y}{ \not4} + 3y}{ \not4 \cdot \dfrac{3y}{ \not4} + y} =$

$\dfrac{\dfrac{3y}{2} + 3y}{3y + y} =$

$\dfrac{\dfrac{3y + 2 \cdot3y}{2}}{4y} =$

$\dfrac{\dfrac{9y}{2}}{4y} =$

$\dfrac{9y}{2} \div\dfrac{4y}{1}=$

$\dfrac{9y}{2} \cdot\dfrac{1}{4y}=$

$\dfrac{9\not y}{2} \cdot\dfrac{1}{4 \not y}=$

$\boxed{ \dfrac{9}{8} }$

~~~~~~Mult succes!~~~~~

Answer 2

Răspuns:

Explicație pas cu pas:

2x+3y/4x+y = 9/8