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Q.

If z+23=z12, then the value of z is ____.

 

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a

5

b

6

c

7

d

8

answer is C.

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Detailed Solution

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Given: z+23=z12

=> 2(z + 2) = 3(z - 1)

=> 2z + 4 = 3z - 3

=> 2z - 3z = - 3 - 4

=> z = 7

 

 

 

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