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Maksim231197 [3]
3 years ago
13

Shau-uen solve the equation 18.5w+6.5w-2.8w=149.1 Her work is shown below

Mathematics
2 answers:
Ghella [55]3 years ago
5 0
The answer is 

C.- step 3
Kobotan [32]3 years ago
3 0

Answer:

Shaun make her first error in step 3. Answer C

Step-by-step explanation:

If have the same units you can simply add them, Like this:

Step (1)

18.5w+6.5w-2.8w= 149.10 <em>(everything in the left side is in terms of w)</em>

Step(2)  

25w-2.8w= 149.1 <em>(add 18.5+6.5)</em>

Step(3)

<u><em>Here you have to add the terms of w</em></u>

(25-2.8)w=149.1

22.2w=149.1

Step(4)

Here you  clear w

w=149.1/22.2

w=6.72

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