-5 + (-4) - 12 - 20 - (-10) + 6 = -25
20 + 10 - 31 + 30 - 5 = 24
20 + 12 - 8 = 24
Answer : 130
Overland - Plus or Minus 10 miles; Plus or minus 5 minutes Oversea - Plus or Minus 20 miles; Plus or minus 5 minutes
20/10 + 10 = 12 20/(10 + 10) = 1
(-11) x (-10) + (-20) 110 + (-20) 90
20 + 10 - 31 + 30 - 5 = 24
20 + 12 - 8 = 24
NO!!!! Here is a table for multiplication/division of 'double (+/-) signs.'. (+)(+) = (+) (+)(-) = (-) (-)(+) = (-) (-)(-) = (+) Sometimes in higher level maths, you can have triple signs. Here is the table. (+)(+)(+) = (+)(+) = (+) (+)(-)(-) = (-)(+) = (-) (-)(+)(+) = (-)(+) = (-) (-)(-)(-) = (+)(-) = (-) It is irrelevant on the position of the 'sign'. NB If no sign is given, then read it as positive (+).
20
Answer : 130
20 + 10 - 12 = 18
10 + 12/3 + 20 = 34
this is the same as 6x - 2 = 6x - 2! There are an infinite number of possibilities for "x".
Overland - Plus or Minus 10 miles; Plus or minus 5 minutes Oversea - Plus or Minus 20 miles; Plus or minus 5 minutes
-20 negative 20 minus 20
20/10 + 10 = 12 20/(10 + 10) = 1