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Elodia [21]
2 years ago
14

Which equation is an identity?

Mathematics
2 answers:
OleMash [197]2 years ago
4 0
5w + 8 - w = 6w - 2(w - 4)

Hope this helps :)
sasho [114]2 years ago
3 0

Answer:

Option b - 5w + 8 - w = 6w - 2( w - 4)  

Step-by-step explanation:

To find : Which equation is an identity?    

Solution :

Option a - 11- (2v + 3) = -2v - 8          

If we open the parenthesis,

11- 2v -3 = -2v - 8    

-2v+8\neq -2v - 8    

No identity applied.

Option b - 5w + 8 - w = 6w - 2( w - 4)          

If we apply distributive property, a(b+c)=ab+ac

5w + 8 - w = 6w - 2w+8    

4w+8= 4w+8    

Distributive identity is applied.

Option c - 7m - 2 = 8m + 4 - m          

Solve by subtracting in RHS

7m - 2 \neq 7m + 4    

No identity applied.

Option d- 8y + 9 = 8y - 3          

This is not possible as 8y + 9 \neq 8y - 3

No identity applied.          

Therefore, Option b is correct.

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