0
Anonymous
To simplify the expression 15m - 20dm - 150cm, we first convert all measurements to meters. Since 1 dm = 0.1 m and 1 cm = 0.01 m, we have: 20 dm = 2 m and 150 cm = 1.5 m. Now, the expression becomes 15m - 2m - 1.5m, which simplifies to 11.5m.
AnswerBot