Question

An equation is shown.

0=2.5 x + 20

What is the solution to this equation?

Answer 1

For this case we must solve the following equation:

`0 = 2.5x + 20`

We know that:

`\frac {5} {2} = 2.5`

Rewriting the equation we have:

`0 = \frac {5} {2} x + 20`

Subtracting 20 from both sides of the equation we have:

`-20 = \frac {5} {2} x`

Multiplying by 2 on both sides of the equation we have:

`2 * (- 20) = 5x\\-40 = 5x`

Dividing by 5 to both sides of the equation we have:

`\frac {-40} {5} = x\\x = -8`

Thus, the value of "x" is -8.

Answer:

`x = -8`