Respuesta :

[tex]5x - 3y = 18[/tex]

x=3

[tex]5 \times 3 - 3y = 18[/tex]

Do the multiplication

[tex]15 - 3y = 18[/tex]

Put in the other side

[tex] - 3y = 18 - 15[/tex]

Subtract

[tex] - 3y = 3[/tex]

Put into fraction

[tex]y = \frac{3}{ - 3} [/tex]

Divide.

[tex]\boxed {y = - 1}[/tex]

Solution: (3, -1)
gmany

(x, y) → (3, y) → x = 3

Put the value of x to the equation:

5(3) - 3y = 18

15 - 3y = 18     subtract 15 from both sides

-3y = 3    divide both sides by (-3)

y = -1

Answer: y = -1