Use the commutative property of addition and the distributive property to write an equivalent expression to −1/2(2x+6) .

Please enclose the fraction (1/2) in parentheses to eliminate any ambiguity.

Simplify -(1/2)(2x+6).  Hold the '-' sign.  Multiply 2x by (1/2) and then 6 by (1/2).  Simplify your result (which should be written inside parentheses).  Now write the '-' sign in front of your parentheses.  

If you wish, change both signs within the parentheses to '-'.  Show your work.

It will take him 5 days