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
Credit:ivythesis.typepad.com
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