Jawabanmu

2014-01-29T20:45:57+07:00
(2x + 1) + (2x + 2) + (2x + 3) + ... + (2x + 50) = 4275
2x * 50 = (1 + 2 + ... + 50)
100x = 1275
100x = 4275 - 1275
100x = 3000
     x =  \frac{3000}{100}
     x = 30

jadi, nilai x adalah 30