Simplify (2r-8)-1/2(9-4r)+5/2

(2r-8)-1/2(9-4r)+5/2

Remove parentheses:

2r-8-1/2(9-4r)+5/2

Multiply:

2r-8- 9-4r/2 + 5/2

Convert element to fraction:

2r/1-8/1-9-4r/2+5/2

Adjust fractions based on LCM:

4r/2-16/2-9-4r/2+5/2

Since the denominaters are equal combine the fractions:

4r-16-(9-4r)+5

Expand:

8r-20/2

Factor:

4(2r-5)/2

Divide the numbers:

2(2r-5)

Your Answer Is 2(2r-5)

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  n=   0.0000 - 0.3750 i  

  n=   0.0000 + 0.3750 i

step-by-step explanation:

one of these should be correct

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13