Question

17 Calcule o valor das expressões,
.
A) (0,5) • (-1,4 + 2,1)
B) 1/2 + 1/4 .(-7/2) - 5/4 . (- 1/8)
C) ( 9/4 + 7/2) + [ 3/16 . ( - 10 ) - 7/2 ]
​

Answer 1

Resposta:

⚠︎C ⚠︎

ꨄ︎☹︎

Explicação passo a passo:

a)

0,5×(-1,4+2,1)

0,5×0,7

0,35

b)

1/2+1/4×(-7/2)-5/4×(-1/8)

1/2-7/8+5/32

16-28+5/32

-7/32

c)

(9/4+7/2)+(3/16×9-(-10)-7/2)

9+14/4+(27/16+10-7/2)

23/4+27+160-56/16

23/4+131/16

92+131/16

223/16

➪ ♡︎ت︎

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