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Question

If z=4(z-9), then z=?


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Solution

Evaluate the given expression:

The given expression is, z=4(z-9)

z=4z-36

4z-36=z

4z-z=36 [Transposing z to LHS and -36 to RHS]

3z=36

3z3=363 [Dividing both sides by 3 ]

z=12

Hence, the required value of z is 12.


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