Here's our ammunition:
1) | We can add or subtract a number from both sides of an equation. |
2) | We can multiply or divide both sides of an equation by a number. |
* And you always do them in this order. |
Now, we'll need to do both in the same problem.
Check it out:
Solve |
Remember our goal: Get the x by himself!
There are two guys bugging the x... -7 and 2. The 2 is really locked on and the -7 is, kind of, hanging off... So, we'll go after him first:
Now, ditch the 2: |
Check it!
Yep!