SOLUTION: 3x+7-x=21

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Question 688598: 3x+7-x=21
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
3x%2B7-x=21 Start with the given equation.


2x%2B7=21 Combine like terms on the left side.


2x=21-7 Subtract 7 from both sides.


2x=14 Combine like terms on the right side.


x=%2814%29%2F%282%29 Divide both sides by 2 to isolate x.


x=7 Reduce.


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Answer:

So the solution is x=7