# Almost Primes Square

**Algebra**Level pending

You're given a \(4\times 4\) magic square, where the sum of every row, column, or diagonal equals to 180, and all the letters \(A\) to \(O\) represent distinct 2-digit prime numbers apart from 49 as shown.

If \(A\) > \(O\) > \(L\) > \(C\), what is the value of \(A\) + \(B\) - \(C\) + \(D\) - \(E\) + \(F\) - \(G\) + \(H\) - \(I\) + \(J\) - \(K\) + \(L\) - \(M\) + \(N\) - \(O\)?