Glencoe Math: Course 2, Volume 2
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Glencoe Math: Course 2, Volume 2 View details
6. Add Linear Expressions
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Exercise 19 Page 401

Remember, only like terms can be combined.

-2 x - 2

Practice makes perfect
The first step in simplifying this expression is to identify which, if any, terms can be combined. Remember, only like terms — constant terms or terms with the same variable — can be combined. ( -6x+ 5)+( 4x - 7)

In this case, we have two x-terms and two constants. Let's arrange the like terms in columns. Then, let's perform the addition. -6 x + 5& (+) 4 x -7& -2 x -2& Therefore, we get the following result. (-6x+5)+(4x-7) = -2 x - 2