math subtract -2.3 - {-8.8}.?
回答 (8)
2008-10-19 7:46 am
✔ 最佳答案
-2.3 - (-8.8) = -2.3 + 8.8 = 6.5
2008-10-19 2:47 pm
-(8.8) is called the absolute value. subtracting a negative number makes it the same as positve. you are basically adding 8.8 to -2.3 which equals 6.5
2008-10-19 4:27 pm
-2.3 - (-8.8)
= -2.3 + 8.8
= 8.8 - 2.3
= 6.5
= -2.3 + 8.8
= 8.8 - 2.3
= 6.5
2008-10-19 3:47 pm
-2.3 - {-8.8}
-2.3 -1{-8.8}
distribute
-2.3 + 8.8 --- negative * negative = positive
8.8 - 2.3
6.5 --- answer
-2.3 -1{-8.8}
distribute
-2.3 + 8.8 --- negative * negative = positive
8.8 - 2.3
6.5 --- answer
2008-10-19 2:49 pm
The answer is 6.5, because the -8.8 means 0 - 8.8 and those two negatives make a positive so the problem is actually -2.3+8.8 or
8.8-2.3
8.8-2.3
2008-10-19 2:48 pm
-2.3-(-8.8)
change the signs
-2.3+(8.8)
then subtract
6.5
change the signs
-2.3+(8.8)
then subtract
6.5
2008-10-19 2:47 pm
-2.3+8.8=6.5
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