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Mathematics 20 Online
OpenStudy (anonymous):

x + (x+5) + (x-1) + x + (x+8) => 5x + 12

OpenStudy (nory):

Start out by removing parentheses. You get a bunch of x-terms and a bunch of constants. Now combine like terms. What do you get on the left side?

OpenStudy (anonymous):

20x?

OpenStudy (nory):

No. Remember that only other terms with x's in them can combine with terms with x's in them.\[x + x + 5 + x - 1 + x + x + 8 = 5x + 12\]

OpenStudy (nory):

Do you understand how I got 5x + 12?

OpenStudy (anonymous):

no

OpenStudy (nory):

First I combined all the x terms. There are five x-terms. That makes 5 times x, or 5x.

OpenStudy (nory):

And then there are a bunch of random numbers, which are 5, -1, and 8, so I add them up to get 12. So it's 5x + 12.

OpenStudy (nory):

Do you understand?

OpenStudy (anonymous):

5x + 12 is in the problem

OpenStudy (anonymous):

x +x + 5 + x - 1 + x + x + 8 => 5x + 12 This is an inequality...correct ?

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