Oddsmakers will set the lines according to the implied probability of either outcome happening. The sum of the probabilities exceeds 100%, as sportsbooks take a small cut on both sides of a line. Second, sports betting odds dictate how much money a bettor needs to wager to make a certain profit.
The number that follows the negative symbol (the odds) reveals how much to bet for everyR$100 you want to win. For example, as explained above, if the team you're betting has -110 odds, you need to wagerR$110 to winR$100. If your team has -150 odds, you must riskR$150 to winR$100.