Answer:

Solution Steps:
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1.) Swap sides so that all variable terms are on the left hand side:
- This is an optional step. I prefer the numbers to be on the left hand side, but it's not necessary.
Equation at the end of Step 1:
2.) Combine 7x and 5x:
- We combine like terms because there is 2 x's, and we need 1 x.
Equation at the end of Step 2:
3.) Subtract 9 from both sides:
Cancels Out
- When solving problems like this, to get x alone you have to do the opposite of what you see.
- In this case, we have a positive 9. So to get rid of 9 we do the opposite: -9 on each side.
Equation at the end of Step 3:
4.) Divide both sides by 12:
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- When solving problems like this, to get x alone you have to do the opposite of what you see.
- In this case, we have 12 being multiplied by x. So to get rid of the 12 we do the opposite: Divide by 12 on each side.
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