SOLUTION: -(7-a)=-3(3-a)= Please help me solve this problem

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Question 899281: -(7-a)=-3(3-a)=

Please help me solve this problem
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
-%287-a%29=-3%283-a%29 Start with the given equation.


-7%2Ba=-9%2B3a Distribute.


a=-9%2B3a%2B7 Add 7 to both sides.


a-3a=-9%2B7 Subtract 3a from both sides.


-2a=-9%2B7 Combine like terms on the left side.


-2a=-2 Combine like terms on the right side.


a=%28-2%29%2F%28-2%29 Divide both sides by -2 to isolate a.


a=1 Reduce.


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Answer:

So the solution is a=1