12+(−7), −5+19, −25−18, −9−4, −14+(−6), 30+(−12), −21+15, 16−(−9), −32+7, 8+(−13), −6−(−11), 45+(−22), −19+(−5), 27−34, −50+20, 14+(−8), −23−17, 60+(−40), −7+33, 11−(−6), 11+(−6), 19+(−25), −12−(−30), 42+(−15), −33+9, 17−21, −45+27, 38+(−19), −16−8, 9+(−4).

addition and subtraction of integers

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