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Old 04-24-2011   #2
Mr. Hui


 
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5x + (7x + 2) = 3(2x + 4) - (2x + 2)

First, use the distributive property to simplify the equation.

5x + 7x + 2 = 6x + 12 -2x - 2

Next, combine like terms.

12x + 2 = 4x + 10

Then, isolate the variable x.

8x = 8

Finally, solve for x.

x = 1

If you would like to see all the steps, check out http://www.algebrahelp.com/calculators/equation/
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