Emma bought 3 dozens of macarons in addition to her 10 pieces of macarons for a party. If 15 pieces of macarons are left over, how many pieces of macarons were eaten?
Three dozens of macarons are equal to 3 x 12 = <<3*12=36>>36 pieces of macarons.
So Emma has a total of 36 + 10 = <<36+10=46>>46 pieces of macarons for the party.
Therefore, 46 - 15 = <<46-15=31>>31 pieces of macarons were eaten.
#### 31