Question

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]





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Answer 1

a) 1,75

(Forma alternativa)

$\frac{7}{4} \: 1 \frac{3}{4}$

b) - 17/32

c) 3/8