贝贝买了1本练习本和1盒彩笔用了9.22元,丽丽买了同样的3本练习本和1盒彩笔用了10.66元。聪明的小朋友,你知道练习本和彩笔的单价各是多少元吗?4y:v3f0l.V9r'I6X'{
算式:提示7P8y/r-a4O;O)g2[4_1m3z4y:v3f0l.V9r'I6X'{
答:练习本是7]6u1T9J(e:I*i'Z.f(t元,彩笔是8](k.c,H2x7@1K7M元。4y:v3f0l.V9r'I6X'{