By Pemdas (order of operations) we start with the parenthesis 3/4 - 1/2(4*-1) = 3/4 - 1/2(-4) Because there are parenthesis next to a number, this is a multiplication
3/4 - 1/2(-4) = 3/4 - (-2) The double negative can be converted into a positive 3/4 - (-2) = 3/4 + 2
Then we can convert the 2 into a fraction of fourths
3/4 + 2 = 3/4 + 8/4
Now we just add the numerators and keep the denominator