Question

在下面算式中添上适当的运算符号和括号,使算式成立。.

1 2 3=1

1 2 3 4=1

1 2 3 4 5 =1

1 2 3 4 5 6 =1

1 2 3 4 5 6 7 =1

Answer 1

1+2÷3=1

（1×2+3）—4=1

【（首烂1+2）÷ 3+4】÷ 5 =1

（1+ 2× 3+ 4- 5）÷ 6 =1

{【（者仿漏大改1+2）÷ 3+4】÷5+6}÷ 7 =1

Answer 2

1+2）带游渗磨迹/3=1

1*2+3-4=1

1+(2-3)-( 4-5) =1

1-2-(3-4)-(5-6) =1

(1+2)/蠢脊3+4-5-(6-7) =1

Answer 3

（1+2）/慧孙轮凯灶3=1

1*2+3-4=1

1+(2-3)-( 4-5) =1

1-2-(3-4)-(5-6) =1

(1+2)/前信3+4-5-(6-7) =1