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03-09-2015
Mathematics

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what is the value of r+s+t when r = 26 , s= -12 , t= -8?

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03-09-2015

r + s + t

Plug in the values.
r = 26
s = -12
t = -8

r + s + t
26 + (-12) + (-8)
26 - 12 - 8
14 - 8
6

Remember these rules:

a + (+b) = a + b
a + (-b) = a - b
a - (+b) = a - b
a - (-b) = a + b

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