Brought back to review the ban have tried practice. the training manual without having a teacher helped teach me to be able to do the test. But I do not study mathematics because it is difficult, I don't understand it.
Has led to review at home. Do not try crema apprentices. The training is done manually without a tutor to teach me to do the test yourself. But the subject that I do not. Mathematics is It's hard because I do not understand it.