Evaluate the expression if the value of r = -22, s = 7, and the value of t = -8

Evaluate the expression if the value of r = -22, s = 7, and the value of t = -8

39. │-r│ + [ - │t + (-s)│]

     = 22 + (-15)

     = 7

40. -│s + (-t) │+ │r│

    = – 15 + 22

    = 7

41. – │t + (-r)│ + │s + r│

    = – 14 + 15

    = 1

42. │-s + (-r) │ + [ - │r + (-t)│]

    = 15 +( -14)

    = 1

 

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