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xeze [42]
3 years ago
7

What is the value of x - f(x)=-7 and f(x)=63

Mathematics
1 answer:
solong [7]3 years ago
3 0

Answer:

56

Step-by-step explanation:

Given expression:

          x - f(x) = -7

            f(x) = 63

Unknown:

The value of x  = ?

Solution:

We can easily solve this problem by simple substitution:

         Since;

             x - f(x) = -7

  and f(x) = 63;

           x - 63  = -7

            x  = -7 + 63

             x  = 56

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