Question

3x+4+8x-28=180 what x

Answer 1

The equation simplified (combine like terms) would be 11x+(-24) =180.
Since adding a negative is the same as subtracting a positive, you could also write it as this: 11x-24=180. Next step is isolate the variable, so to do that you need to add 24 to both sides of the equation: 11x-24+24=180+24. This is the same as 11x=204. Now to get only one of the variable, you need to divide both sides by 11. x=18.54 repeating or x=18 6/11. Hope this helped! 

Answer 2

3x+4+8x-28=180
Add 8x to 3x
11x+4-28=180
Subtract 28 from 4
11x-24=180
Add 24 to both sides
11x=204
Divide 11 on both sides
Final Answer: x= 204/11 or 18 6/11 *Both answers are equivalent to each other.