1.

Sate true or false.a 7 + 15 = 15+ (-17)b. 64 - (+64) = 0c. (-17 + 8) + 20 = [8 + (-17)] + 20d. (-54) + 0 = 0​

Answer»

ANSWER:

a. false

b.true

c.true

d.false



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