SOLUTION: can you explain how to do theese problems -20-(4x-1)=-15 12(x+3)- 3x=117 -25+4(2x+5)=-61 187+ 19=7 (13- x)

Algebra ->  Distributive-associative-commutative-properties -> SOLUTION: can you explain how to do theese problems -20-(4x-1)=-15 12(x+3)- 3x=117 -25+4(2x+5)=-61 187+ 19=7 (13- x)      Log On


   

Question 684658: can you explain how to do theese problems
-20-(4x-1)=-15
12(x+3)- 3x=117
-25+4(2x+5)=-61
187+ 19=7 (13- x)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
-20-1%284x-1%29=-15 Start with the given equation.


-20-4x%2B1=-15 Distribute.


-4x-19=-15 Combine like terms on the left side.


-4x=-15%2B19 Add 19 to both sides.


-4x=4 Combine like terms on the right side.


x=%284%29%2F%28-4%29 Divide both sides by -4 to isolate x.


x=-1 Reduce.


------------------------------

Answer:

So the solution is x=-1

========================================================================

12%28x%2B3%29-3x=117 Start with the given equation.


12x%2B36-3x=117 Distribute.


9x%2B36=117 Combine like terms on the left side.


9x=117-36 Subtract 36 from both sides.


9x=81 Combine like terms on the right side.


x=%2881%29%2F%289%29 Divide both sides by 9 to isolate x.


x=9 Reduce.


------------------------------

Answer:

So the solution is x=9