有30张彩色纸，做纸花用去11张，做小旗用去9张，还剩多少张彩色纸？*`5p:S9P,l2S1z(K;b0_.v1{
算式：提示;[-A;L8X6R/O4{(j*`5p:S9P,l2S1z(K;b0_.v1{
答：还剩8w3E+y-U7B6M张彩色纸。*`5p:S9P,l2S1z(K;b0_.v1{