Answers

2014-08-13T18:42:31+08:00
16 - (-20) = -4

sol'n:
     -20
   -  16
--------------
      -4

*subtract the two numbers then copy the sign of the bigger number.
1 1 1
hindi pala -4 yung sagot. 36 po pala dapat.
2014-08-13T19:57:09+08:00
36 is the answer because 16 - (-20) change the sign of the subtrahend then proceed to addition so 16 + 20 = 36
1 5 1
i agree..bcoz the rule in subtracting unlike sign is:copy the sign of the minuend then add