Describe and correct the error in finding the difference of -2 and - -2 - (-5) = -2 + (-5) = -7

In this case, the way the negative was distributed for the -5 is incorrect. So instead of -2+5, it's saying that -2-5 is the same as -2 + -5, Which is isn't in this case. So the error here is the distribution of the -(-5).

The correct way is this:

-2-(-5)

-2+5 = 3

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!