Which expression is equivalent to -3(2m-1)-n

-3(2m-1)-n

First we multiply -3 to the first term of the expression

> ( -3*2m + (-3)*(-1) ) - n

> ( -6m + 3 ) - n

> -6m -n + 3

Then, we divide and multiply by -6, (the expression remains the same)


> (-6/-6)* (-6m -n + 3)

> -6*[m + (n/6) - 1/2]

The answer is -6*[m + (n/6) - 1/2]

The amount used= 13.04- 1.9 = 11.14