Question

soluçao da equaçao x-2y=9

 (0 e ....)

Answer 1

x - 2y = 9 
2y = x - 9 
y = $\frac{x - 9}{2}$

$\frac{x-9}{2} = 0$

x- 9 = 2.0 
x - 9 = 0 
x = 9 

Answer 2

Olá, Lilia


X-2Y=9
 Y= 9-X:2


Y= 9-X:2
 -9-X:2=0
-9-X=0.2
 x=0:9
 x=0