Evaluate :
8 - (-23)
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We have
8 - (-23) = 8 + 23 = 31 \hspace{2cm} [∵ a - (-b) = a + b]
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(-20) - 6
(-1) - (-19)
Verify the following :
(-14) + 9 = 9 + (-14)
(-8) + (-12) = (-12) + (-8)
