Question

28 -20 24 21 -21 a) 5 . ( -3 -1 ) b) 7 . ( 2 - 5 ) c) ( -8 + 1 ) . (-3) d) ( -2 - 3 -1 ) . ( -4 ) e) 18 - ( -5 - 2 - 3 ) a) 5 . ( -3 -1 ) b) 7 . ( 2 - 5 ) c) ( -8 + 1 ) . (-3) d) ( -2 - 3 -1 ) . ( -4 ) e) 18 - ( -5 - 2 - 3 )

Answer 1

Explicação passo-a-passo:

a) 5 . ( -3 -1 ) = 5.(-4)=-20

b) 7 . ( 2 - 5 ) = 7. (-3) = -21

c) ( -8 + 1 ) . (-3) = (-7) . (-3) = +21

d) ( -2 - 3 -1 ) . ( -4 ) = (-6) . (-4) = +24

e) 18 - ( -5 - 2 - 3 ) = 18 - (-9) = 18 + 9 = 27