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a) -25+16
b) -7-(+18) + (-15)
c) (-8)(+9)+(-7)(-9)
d) (-63):(+9)-(+54):(-6)
dau coroanaaaa!!


Răspuns :

Răspuns:

a) .-9

b). -40

c) .-9

d) .-16

Răspuns:

-25+16=

= - (25-16)

= -9

-7-(+18) + (-15)=

= -7-18-15

= -40

(-8)(+9)+(-7)(-9)=

= -8×9+7×9

= 9-8+7

= 9× (-1)

= -9

(-63):(+9)-(+54):(-6)=

= - 7+9

= 2