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How do you combine #(7a + 4b) - (2a + 3b)#?

Answer 1

Ethan Adkins

#=5a+b #

#7a+4b−2a-3b#

Grouping like terms: #=color(blue)((7a -2a)) +(4b-3b) #

#=5a+b #

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Answer 2

Abigail Allen

To combine (7a + 4b) - (2a + 3b), you need to distribute the negative sign inside the parentheses of the second expression and then combine like terms.

(7a + 4b) - (2a + 3b) = 7a + 4b - 2a - 3b

Now, combine like terms:

7a - 2a = 5a 4b - 3b = b

So, the combined expression is:

5a + b

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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