Zero
-9
When you have two different signs together (a plus and a minus) the minus takes precedence (the minus "wins"). So, for example, 9 + -3 = 9 - 3 = 6.
-1
2.8 times 4 plus 9 plus 3 minus 2.8 plus 4.2 is equal to 24.6
Zero
-9
Negative 12 minus 3 plus 9 is equal to -6
When you have two different signs together (a plus and a minus) the minus takes precedence (the minus "wins"). So, for example, 9 + -3 = 9 - 3 = 6.
-1
Negative one.
2.8 times 4 plus 9 plus 3 minus 2.8 plus 4.2 is equal to 24.6
plus or minus. You see it often with square roots. The square root of 9 is plus or minus 3.
9.
1 + 6 + 9 - 8 + 4 - 5 + 2 + 3 = -6
i do know the answer
16