Question

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

Answer 1

(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