Question

Solve the equation for m. Show your

work.
0.4(20 – 10m) = 2.5 – 2m – 12.5
HELP ME AND PLZ SHOW ME HOW YOU GOT IT:)

Answer 1

After solving the equation
`0.4(20 - 10m) = 2.5 - 2m - 12.5` for m we get m=9

Explanation:

We need to solve the equation
`0.4(20 - 10m) = 2.5 - 2m - 12.5` for m.

That is we need to find value of m.

Solving:

`0.4(20 - 10m) = 2.5 - 2m - 12.5`

Multiply 0.4 with terms inside the bracket

`8-4m=2.5-2m-12.5`

Now, adding 2m on both sides

`8-4m+2m=2.5-2m-12.5+2m\\8-2m=2.5-12.5\\8-2m=-10`

Subtracting 8 from both sides

`8-2m-8=-10-8\\-2m=-18`

Divide both sides by -2

`(-2m)/(-2)=(-18)/(-2)\\m=9`

So, after solving the equation
`0.4(20 - 10m) = 2.5 - 2m - 12.5` for m we get m=9