Question

4x+5y=5 -10y-4x=-7 igualacion

Answer 1

4x+5y=5
-10y-4x= -7

4x+5y=5
x= (5-5y)/4

-10y-4x= -7
x= (-7+10y)/-4

(5-5y)/4= (-7+10y)/-4

-4(5-5y)/4= -7+10y
-5+5y= -7+10y
10y-5y= -5+7
5y= 2
y= 2/5


x= (5-5y)/4
x= (5-5(2/5))/4
x= (5-2)/4
x= 3/4

Answer 2

Explicación:

esta mal la respuesta 1