The class leader wants to distribute 22 erasers and 33 pencils to the students participating in cleaning the classroom. As a result, there is 1 more eraser and 2 less pencils. How many students participate in cleaning?
班长要将22块橡皮擦和33支铅笔平均分给参加打扫教室卫生的同学，结果橡皮擦多1块，铅笔少2支，参加打扫卫生的同学有多少人人？
<result>7</result>