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1. Evaluate each expression:


a. −12•13


b. −12•−13


c. 12•(−54)


d. −12•(−54)

Sagot :

Romeroshashiidn

Answer:

a.  −12•13= -156

b. −12•−13= 156

c. 12•(−54) = -648

d. −12•(−54) = 648

Step-by-step explanation:

a and c have negative

b and d have positive

hope this helps ;)

XIXIXIXidn

Answer:

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Step-by-step explanation:

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