betting question

+2, if you lose by 1 goal you win, if you lose by 2 goals you will get your money back.

-1.5 you need to win by 2.

-2, you need to win by 3, if you win by 2 you will get your money back . 

-1,-1½ means that when you bet 100$, you have 50$ on -1 and 50$ on -1.5 [Half of your stake on each side] so in this case its 61.5$ on Brazil -1 and 61.5$ on Brazil -1.5. 

Brazil -1 means that Brazil needs to win by 2 or more in order for you to win the bet,but if they win your bet by exactly 1 you will get your money return, this means if brazil wins 1-0, 2-1 or 3-2 or something like that, then you will get 61.5$ in return. 

The Brazil -1.5 means that Brazil needs to win by 2 or more goals in order for you to win the bet, if they fail to do that you lose your bet and the 61.5$

So: If Brazil wins by exactly one you get 61.5$ in return, if they win by exactly 2 or more then you will get full payout of the bet, and a draw or a croatia win will lose you the bets.