lots of numbers.. it depends on if you want integers or real numbers. So for example, 0 and -2 and 5 are between 20 and -15, but so is Pi, and the square root of 2 and an infinite number of numbers If we just limit the answer to integers, then we have -14, -13, -12,-12......0, 1, 2, 3,4,....19. Sometimes we include the endpoints, -15 and 20, but usually we are told to do that Mathdoc Doctor Chuck
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9 - (-6) = 9 + 6 = 15 is the difference between -6 and 9. It could also be -15 if the equation is written as -6 - 9 = -15.
Negative 10 divided by negative two-thirds = 15/1 or 15
negative 20
A negative number. Ie; -5 x 3 = -15
13 10 17 15 21 13 - 10 = -3 10 - 17 = +7 17 - 15 = -2 15 - 21 = +6 The negative numbers alternate with the positive numbers The negative numbers are augmented by +1 each step The positive numbers are diminished by -1 each sterp So the next step from 21 is a negative and should be -2 increased by +1 to -1 giving a new value of 20 Then the next step is a positive and should be +6 decreased by -1 to +5 giving 25 13 - 10 = -3 10 - 17 = +7 17 - 15 = -2 15 - 21 = +6 21 - 20 = -1 20 - 25 = +5