Question

3) Determine o valor das seguintes expressões:
a) ½ : 1/3 + ¾ x 5/9
b) –1,27 + [4,731 (– 11,3 + 9,956) + 12,5] -5,638
c) (2,048: -8,192). (0,36: -1,80)

Answer 1

Resposta:

Olá!

Explicação passo-a-passo:

3. a) $\frac{\frac{1}{2} }{\frac{1}{3} }+\frac{3}{4}.\frac{5}{9}$

$\frac{1}{2}.\frac{3}{1}+\frac{3}{4}.\frac{5}{9}$

$\frac{3}{2}+\frac{15}{36}$

$\frac{54+15}{36}$

$\frac{69}{36}=\frac{23}{12}$

b) $-1,27+[4,731.(-11,3+9,956)+12,5]$

$-1,27+[4,731.(-1,344)+12,5]$

$-1,27+[-6,358464+12,5]$

$-1,27+6,141536$

$4,871536$

c)$(\frac{2,048}{-8,192}).(\frac{0,36}{-1,80})$

$(-0,25).(-0,2)$

$+0,05=\frac{5}{100}$

Bons Estudos!