Verify the following :
(-8) + (-12) = (-12) + (-8)
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We have
LHS = (−8) + (−12)= −20
RHS = (−12) + (−8)= −20
Since LHS = RHS,∴ (-8) + (-12) = (-12) + (-8)
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Evaluate :
8 - (-23)
(-14) + 9 = 9 + (-14)
(-6) + [(-8) + 12] = [(-6) + (-8)] + 12
[(-9) + (-7)] + (-14) = (-9) + [(-7) + (-14)]