Question

Solve the equation12.5 = 2.5x-10 = -8 + x-10 = -2.5x

Answer 1

The given equation is

`12.5=2.5x`

We just have to divide by 2.5 each side

`\begin{gathered} (12.5)/(2.5)=(2.5x)/(2.5) \\ x=5 \end{gathered}`

The solution is 5.

The second equation is

`-10=-8+x`

We have to sum 8 on each side

`\begin{gathered} -10+8=-8+x+8 \\ -2=x \\ x=-2 \end{gathered}`

The solution is -2.

The third equation is

`-10=-2.5x`

We have to divide the equation by -2.5

`\begin{gathered} (-10)/(-2.5)=(-2.5x)/(-2.5) \\ x=4 \end{gathered}`

The solution is 4.