Multiply 85 by 2-50 to get 120 trees ..., 2,85+(85-50) = 120 people don't like multiplication, so try to reduce what can be converted into addition and subtraction, which is barely a mathematical thinking ~ Children should study hard, and 2,85+(85-50) trees seem to be children. . You should use your brains to do your homework. It's not good to find the answer online ~ ~, 1,