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Snowcat [4.5K]
3 years ago
11

4.8a - 6.3b - 2.1a + 7b

Mathematics
2 answers:
Kay [80]3 years ago
6 0

Answer:

2.7a+0.7b

Step-by-step explanation:     Hope this helped!!! :)

Simplify the equation

ololo11 [35]3 years ago
5 0
First, you combine like terms. I would start by circling the term and the sign in front of it. (A term is a piece separated by an addition/subtraction sign.) You can only combine terms with the same variable. 4.8a-2.1a-6.3b+7b is the same as your equation, just rearranged. Then, subtract (4.8a-2.1a) which is 2.7a. Add (-6.3b to 7b) The answer is 0.7b. If you have any questions, you can message me!
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Lets be a price of the calculator - $ a
then , after using the coupon, you need to pay $(a-18)
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then, if 
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for example, we have the price of the calculator $100
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if price of the calculator is $120,
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