1 + 1 == 3


    

      

  
-5 + -5 == -10


    

      

  
-5 - -5 == -10


    

      

  
----1 == 1


    

      

  
5 / 2 == 2


    

      

  
5 / 2.0 == 2


    

      

  
3 + 2 + 3 + 7 == 15 


    

      

  
5 / 2.0 == 2.55 - 0.5


    

      

  
3 - 2 > 1


    

      

  
1 + 3 == 5 - 1


    

      

  
-1 - 1 - -1 == -3


    

      

  
3 + 2 + 1
 + 7 == 13


    

      

  
2 + 3 == 5


    

      

  
3 / 2 == 1


    

      

  
3 % 2 == 1


    

      

  
9 % 5 % 3 == 1


    

      

  
0.1 - -0.2 == -0.1


    

      

  
-0.1 - 0.2 == -0.3


    

      

  
(-0.1 - 0.2).round(2) == -0.3


    

      

  
(1e2 - 10).zero?