Respuesta :

gmany

Answer:

x = 0

Step-by-step explanation:

[tex]\text{Substitute}\ y=4\ \text{to the equation}\ 2x=20-5y:\\\\2x=20-5(4)\qquad\text{first multiplication}\\\\2x=20-20\\\\2x=0\qquad\text{divide both sides by 2}\\\\\dfrac{2x}{2}=\dfrac{0}{2}\\\\x=0[/tex]

fatemehkorea

Answer:

x = 0

Step-by-step explanation:

2x = 20 - 5y

y = 5

2x = 20 - 5*4

2x = 20 - 20

2x = 0

x = 0/2

x = 0