Equations with fractions; Show work!
-7x + 3 = -15/2
Will Give Medals!!

Question

Equations with fractions; Show work! 
-7x + 3 = -15/2
Will Give Medals!!

ivettef365 · Answer

first you can subtract 3 on both sides, do you have

-7x +3 -3 = -15/2 -3

anonymous · Answer

X=-3/2 
7x+3=15/2
     -3      -3
7x=9/2

ivettef365 · Answer

it should be -15/2

anonymous · Answer

How do you subtract three from a decimal!

anonymous · Answer

X=-3/2
7x+3=-15/2
____-3___-3__
7x=-10 1/2
7(-3/2)=10 1/2

anonymous · Answer

like this 
  3.5
-3.0
   0.5

anonymous · Answer

You confused me! Sorry! 
I get the last comment but not the one before that, Why are you starting with x= -3/2

anonymous · Answer

because that is what x equals

ivettef365 · Answer

I got positive 3/2

anonymous · Answer

o wow your right it is positve

ivettef365 · Answer

that is all he needs, the answer is 3/2

anonymous · Answer

Thank you but can I see it worked out!

ivettef365 · Answer

this is how you show your work:

-7x + 3 = -15/2
-7x +3 -3 = -15/2 -3

               15         3
-7x =  - ---   -  -----
                2           1


              -15-6
-7x =  --------
                  2

-7x =  -21/2

ivettef365 · Answer

now divide by -7 so you have

       1                 7                     21             1 
-   ----  x  -  -----   x  =  -  ----  x  - -----
       7                 1                     2              7

ivettef365 · Answer

so x = 21/14 

simplify dividing by 7  and you get 3/2

ivettef365 · Answer

that x after the first - 1/7 is to show you is multiplication, is not actually an x

anonymous · Answer

OK! Thank you