Question 39735: -3x = 27
This is a very basic pre algebra equation. If you are having trouble with this one, you should ask for help and some more sample problems.
-3x = 27
you isolate the variable ( I do this by circling it, and then you know which side to be working on) Then perform the opposite operation on both sides of the equal sign. This time it will be dividing, since 3x means 3 times x
-3x = 27
--- -----
-3 -3
The multiplying and dividing by -3, cancel each other out, so you are just left with x
x= -9
then to check..subsitute the -9, where the x is, and check.
Solve for x .
Answer by siouxie(6)   (Show Source):
You can put this solution on YOUR website! -3x = 27
This is a very basic pre algebra equation. If you are having trouble with this one, you should ask for help and some more sample problems.
-3x = 27
you isolate the variable ( I do this by circling it, and then you know which side to be working on) Then perform the opposite operation on both sides of the equal sign. This time it will be dividing, since 3x means 3 times x
-3x = 27
--- -----
-3 -3
The multiplying and dividing by -3, cancel each other out, so you are just left with x
x= -9
then to check..subsitute the -9, where the x is, and check.
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