算24点:11,8,7,11 -7,-8,12,9 4,-4,6,6.
问题描述：
算24点:11,8,7,11 -7,-8,12,9 4,-4,6,6.
-24,+24都可以!
答
11,8,7,11无解是正确的-7,-8,12,9(-7-9)÷-8×12=24(-7-9)÷(-8÷12)=24(-7-9)×12÷-8=24-8÷-7×(12+9)=24-8÷-7×(9+12)=24-8×(12+9)÷-7=24-8×(9+12)÷-7=2412×(-7-9)÷-8=2412÷-8×(-7-9)=24(12+9)÷-7×-8...