算“24点”(是结果等于24或-24) (1)3,5,-8,7

问题描述:

算“24点”(是结果等于24或-24) (1)3,5,-8,7
填上运算符号,使等式成立
1___2____3____4______5______6_________=5

(1)3×7-(5-8)
=21-(-3)
=24
(2)1加2-3加4-5加6
=6-1
=5