Respuesta :

1 Subtract
9
y
9y from both sides
4
x
=
6
3

9
y
4x=63−9y

2 Divide both sides by
4
4
x
=
6
3

9
y
4
x=
​4

​63−9y
​​

3 Factor out the common term
9
9
x
=
9
(
7

y
)
4
x=
​4

​9(7−y)
​​

Done