luwi005
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Use the given integers to make each equation true: 2, 5, 7, -3, -5, -9 .
Please help this is all about adding and subtracting
And I need help by tomorrow thank you
8. ___ + ___ + ___ = -10
9. ___ + ___ + ___ = 9
10. ___ + ___- ___ = 21

Respuesta :

(1) -3     +     -9     +      2    = -10

(2) 5     +      7     +     -3     = 9

(3)  5     +      7     -     -9     = 21

Solution:

Given numbers are 2, 5, 7, -3, -5 and -9.

(1) _____ + _____ + _____ = -10

-3 + (-9) + 2 = -3 - 9 + 2

                   = -12 + 2

                   = -10

-3     +     -9     +      2    = -10

(2) _____ + _____ + _____ = 9

5 + 7 + (-3) = 5 + 7 - 3

                   = 12 - 3

                   = 9

 5     +      7     +     -3     = 9

(3) _____ + _____ - _____ = 21

5 + 7 - (-9) = 5 + 7 + 9

                   = 12 + 9

                   = 21

5     +      7     -     -9     = 21

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