Question 215525: Help me with this problem? 0.09(9x+4)=0.81(x+7)-5.31
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Help me with this problem? 0.09(9x+4)=0.81(x+7)-5.31
:
Get rid of those annoying decimals, multiply by 100, results:
9(9x+4) = 81(x+7)- 531
:
Multiply what's inside the brackets
81x + 36 = 81x + 567 - 531
:
81x + 36 = 81x + 36
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Subtract 36 from both sides
81x = 81x
:
Obviously, that is true for any value for x, no unique solution here
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