Step-by-step explanation:
Substitute y = 5 into the equation:
[tex] - 6x - 8( - 5) = - 20[/tex]
Multiply:
[tex] - 6x + 40 = - 20[/tex]
Subtract 40 from each side:
[tex] - 6x = - 60[/tex]
Divide each side by -6:
[tex]x = 10[/tex]
Substitute y = -5 into the equation:
[tex]x - 5= 5[/tex]
Add 5 to both sides of the equation:
[tex]x = 10[/tex]
x will equal 10.
