mariaanca917 mariaanca917

14-09-2017
Mathematics

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(-3)+(-7)+(-11)-(-21)+(-3)-(-1)

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choixongdong choixongdong

14-09-2017

(-3)+(-7)+(-11)-(-21)+(-3)-(-1)
= (-3)+(-7)+(-11) + 21 +(-3) + 1
= 22 + (-24)
= -2

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