7. log2(x - 2) + 5 = 8 - log2 4

• log2(x-2) +5 = 8 - log2 4
  log2 4 + log2(x-2) = 3.
  log2 (x-2)*4 = 3
  4x - 8 = 2^3
  4x = 16;
  x = 4
  ans ====4;
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