AN EXAMPLE PROBLEM THAT YOU'RE PROBABLY CLUELESS
ABOUT |
INSTRUCTIONS THAT WILL CURE YOUR CONFUSION |
5x-3= 9 |
Make it your #1 duty to ISOLATE THE VARIABLE! Do This by Adding 3
to both sides of the equation |
5x =12 |
Now you've gotten rid of that nasty 3. |
x =12/5 |
To Find the value of X, divide 12 by 5. |
x =2.4 |
You have now solved for X! |
Example 2: 7x + 7 = 2(x + 1) |
OH NO!! A VARIABLE ON BOTH SIDES!! |
7x + 7 = 2x + 1 |
Use your ORDER OF OPERATIONS (Please Excuse My Dear Aunt Sally) (Parenthesis
Exponents Multiply Divide Add Subtract) To rid the x from the parenthesis.. |
7x = 2x + -6 |
Subtract 7 from each side since 7 was added on the original side. |
5x = -6 |
Subtract 2x from each side since 2x was added on the original side. |
-6/5 = x |
To solve for x, divide -6 by 5 |
x = -1.2 |
You have now solved for X! |