For this case we must solve the following equation:
[tex]0 = 2.5x + 20[/tex]
We know that:
[tex]\frac {5} {2} = 2.5[/tex]
Rewriting the equation we have:
[tex]0 = \frac {5} {2} x + 20[/tex]
Subtracting 20 from both sides of the equation we have:
[tex]-20 = \frac {5} {2} x[/tex]
Multiplying by 2 on both sides of the equation we have:
[tex]2 * (- 20) = 5x\\-40 = 5x[/tex]
Dividing by 5 to both sides of the equation we have:
[tex]\frac {-40} {5} = x\\x = -8[/tex]
Thus, the value of "x" is -8.
Answer:
[tex]x = -8[/tex]
