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(-12+15-8)×(-9)
(-1)×(-20)×(-2)×|-1-3+5|
ajutor vă rog !!!


Răspuns :

(-12+15-8)×(-9)=
=-5×(-9)
=45

(1)×(-20)×(-2)×|-1-3+5|=
=(-20)×(-2)×|1|=
=(-20)×(-2)×1=
=40