-3 x -3=9 A rule in pre-algebra summarizes in a problem when their is an odd amount of odd - (negative numbers) then the answer is negative, if it is even is is positive.
So the problem is asking, the opposite of three times the opposite of three equals 9, so lets take one of those opposites away. The opposite of three times three equals opposite of nine. (If you haven't noticed, negative and opposite are interchangeable.) And another opposite and get the original problem, the opposite of three times the opposite of three equals 9. So the opposite of the negative nine from the first multiply, is positive nine.
Example
-3 x 3= -9 (1 negative)
-3 x -3= 9 (2 negative, the opposite of the opposite.)
Tips- It is easier to think as two - - = +,
DO NOT MISTAKE THIS WITH ++=+, IT DOES NOT EQUAL A NEGATIVE.
THIS ONLY WORKS WITH MULTIPLYING AND DIVIDING.
(in basic math)
24
-16 minus -9 is -7
4x2 - 9 = (2x + 3)(2x - 3)
-9 minus -4 is -5
A minus and a minus makes a plus A plus and a plus makes a plus A minus and a plus or plus and a minus makes a minus 7 - -2 is a minus and a minus Therefore the answer is 7 + 2 = 9
0
minus 21 think of it as 12+9 which equals 21 then just whack a minus sign infront
It is -6 minus -9 = +3. That's because minus -9 is the same as +9.
3 minus -9 is 12.
-9
-8 + 45 = 37
-9
2 - (-9) - 8 = 3
(-9) / 3 = -3 . Minus nine divided by three is equal to minus three
100 - 1-2-3-4-5-6-7-8-9-9-8 => 100-)1+2+3+4+5+6+7+8+9+9+8) 100 - (62) 38 The Answer!!!!
9/10 minus 3 is -2 1/10
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.