SOLUTION: is the expression to te right simplifid corectly? explain in complete sentences why or why not? 3a + b/7 + b = 3a/7

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Question 461113: is the expression to te right simplifid corectly?
explain in complete sentences why or why not? 3a + b/7 + b = 3a/7

Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
Assuming you started with
3a +b/7 + b = 3a/7
Multiply both sides by 7 to get rid of fractions.
21a +b +7b = 3a
Subtract 3a from both sides
21a +b +7b -3a = 0
Collect terms
18a +8b =0
Divid by 2
9a +4b = 0