Respuesta:
a=-57 b=14 c=76 d=-27
Explicación paso a paso
a- [(-28) –(-42)] –(13)=[(-28)-(+ 42)] -(-13) = [(-28)-(+ 42)] +13 = [-28-(+ 42)] +13 = [-28-42] +13 = -28 - 42 +13 = - 57
b- [(-15) –(-6)] –(23)=[(-15)-(-6)]-(-23)
[-15+6]-(-23)
[-9]-(-23)
-9+23
14
c- [(+45) –(-4)] –(+27)=
− [ 4 5 − 1 ( − 4 ) ] − ( 2 7 )
− [ 4 5 +4 ] − ( 2 7 )
− 7 6
d- [(+17) –(-18)] –(-72)=
= 45 - 72
= -27
de nada corona por favor
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Respuesta:
a=-57 b=14 c=76 d=-27
Explicación paso a paso
a- [(-28) –(-42)] –(13)=[(-28)-(+ 42)] -(-13) = [(-28)-(+ 42)] +13 = [-28-(+ 42)] +13 = [-28-42] +13 = -28 - 42 +13 = - 57
b- [(-15) –(-6)] –(23)=[(-15)-(-6)]-(-23)
[-15+6]-(-23)
[-9]-(-23)
-9+23
14
c- [(+45) –(-4)] –(+27)=
− [ 4 5 − 1 ( − 4 ) ] − ( 2 7 )
− [ 4 5 +4 ] − ( 2 7 )
− 7 6
d- [(+17) –(-18)] –(-72)=
= 45 - 72
= -27
de nada corona por favor