What is the sum of the factors? Two factors of -48 have a difference of 19. The factor
with a greater absolute value is positive.
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0-19
0-13
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9514 1404 393

  13

Explanation:

-48 = -1·48 = -2·24 = -3·16 = -4·12 = -6·8

The differences between the second factor and the first are ...

  49, 26, 19, 16, 14

The factor pair with a difference of 19 is (-3, 16). The sum of these two factors is ...

  16 +(-3) = 13

(4,-2)

explanation:

6x+4y=16

-6x-9y=-6

-5y=10

y=-2

x=4