Question

1 2 (–1.4m + 0.4) = m + 0.2

Answer 1

First, you need to get rid of the parenthesis, so you need to distribute:

12(–1.4m + 0.4) = m + 0.2

-16.8m + 4.8 = m +0.2

Then subtract both sides by m:

-16.8m - m + 4.8 = m +0.2 - m

-17.8m + 4.8 = 0.2

Subtract both sides by 4.8:

-17.8m + 4.8 - 4.8 = 0.2 - 4.8

-17.8m = -4.6

Now, divide both sides by -17.8:

-17.8m/-17.8 = -4.6/-17.8

m ≈ 0.258