SOLUTION: What is the process to solve x - 2x = 15 ? Do I have to factor something? thanks!

Question 55077: What is the process to solve x - 2x = 15 ? Do I have to factor something?
thanks!
Found 2 solutions by anjulasahay, funmath:
Answer by anjulasahay(30) (Show Source): You can put this solution on YOUR website!
What is the process to solve x - 2x = 15 ? Do I have to factor something?
thanks!
ans:
x-2x=15
or -x=15
or x=-15
Answer by funmath(2933) (Show Source): You can put this solution on YOUR website!
What is the process to solve x - 2x = 15 ? Do I have to factor something?
No, nothing that complicated.
First combine your like terms on the left.
1x-2x=15
(1-2)x=15
-1x=15
Divide by the coefficient of x, -1 on both sides of the equal sign.
-1x/-1=15/-1
x=-15
:
To check to see if we're right, substitute -15 in where the x's were in the original equation and see if both sides equal.
(-15)-2(-15)=15
-15+30=15
15=15 The answer checks out.
Happy Calculating!!!
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