|
Question 154026: x+6= 3(5-x)
i don't know what to do because the (5-x) got me all confused. please please help.
3/2x +1= 13
this problems messed me up because of the fraction.
Found 2 solutions by checkley77, Earlsdon: Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! x+6=3(5-x)
x+6=15-3x
x+3x=15-6
4x=9
x=9/4 answer.
--------------------------
3/2x+1=13
3x/2+1=13
3x/2=13-1
3x/2=12
3x=2*12
3x=24
x=24/3
x=8 answer.
Answer by Earlsdon(6294) (Show Source):
You can put this solution on YOUR website! Ok, let's look at the first one:
The first thing you want to do is to apply the distributive property to the right side.
Simplify this.
Now subtract x from both sides to get the variable, x, on on side of the equation, and it really doesn't matter which side but here, it ends up on the right side.
Simplify.
Now that you have the x on one side, you subtract 15 from both sides to leave the x-term by itself on the right side.
Simplify.
Now you need to "undo" the multiplication of the x by (-4), so you would divide both sides by (-4).
Simplify.
or 
-----------------------------------
This problem is easier to handle if you can "clear" the fraction and you can do this by multiplying through by the denominator of 2.

Simplifying this, you'll get:
Now, to isolate the x-term. you'll subtract 2 from both sides of the equation.
Simplify.
Finally, divide both sides by 3 to get the x by itself.
Simplify.
|
|
|
| |