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你那个是-5还是5啊?
是5的话:9+5×(12÷4)=24 9+5×12÷4=24
9-12/4*(-5)=24
12除以4=3 3乘以富负5=-15
9减-15=24
1,9-12÷4×(-5)=24
2,(-5)方+12-9-4 =24
3,9-(-5)×12÷4=24
(-5)方+12-9-4
=25+12-9-4
=37-9-4
=24
或者是
9-5=4
√4=2
4-2=2
2×12=24