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How do you solve #-\frac { x } { 4} = 27#?

1 Answer
Mar 9, 2018

Answer:

#x=-108#

Explanation:

Our goal with these is to isolate the variable, in our case #x#. By doing that, we need to undo any operation being applied to it (more on this at the end of my answer).

Right now, #x# is being divided by #4#, so we must multiply both sides by #4#. We get:

#-x=108#

We can divide both sides by #-1# to get:

#x=-108#

More about undoing operations: To undo...

Multiplication: Divide both sides
Division: Multiply both sides
Addition: Subtract from both sides
Subtraction: Add to both sides

Hope this helps!