Solve for n.

0.4 (5 - 0.4n) = - 3.2

0.4 (5-0.4n) = - 3.2

Divide by 0.4 both sides

5-0.4n = - 3.2/0.4

Rearrange

-0.4n = - 3.2/0.4 - 5

Simplify

{-3.2/0.4 = - 32/4 [if you multiply and divide by 10] = - 8}

-0.4n = - 8-5 {8+5=13 and since both are negative don't forget the sign}

-0.4n=-13

n=13/0.4 {multiply and divide by 10 }

n=130/4 {130/2 = 65, 65/2 = 32.5 So 130/4=32.5}

n=32.5

Remember you can do anything to an equaiotn as long as you do it to both sides

also, negative/positive=negative so

0.4 (5-0.4n) = - 3.2

divide both sides by 0.4

5-0.4n=-8

subtract 5 from both sides

-0.4n=-13

divide both sides by - 0.4

n=32.5