Question

Qual e o valor
$\frac{3}{8} + \frac{2}{9} - \frac{1}{7} =$
$\frac{2}{5} + 6$
$\frac{26}{7} \times \frac{5}{8} =$
$\frac{2}{5} + \frac{3}{2} \times ( \frac{1}{4} \div \frac{3}{7} ) =$
$( \frac{4}{3} - \frac{1}{5} ) \div 3$
​

Answer 1

Explicação passo-a-passo:

.

$\dfrac{3}{8} + \dfrac{2}{9} - \dfrac{1}{7}$

$\dfrac{189 + 112 - 72}{504}$

$\dfrac{229}{504}$

.

$\dfrac{2}{5} + 6$

$\dfrac{2 + 30}{5}$

$\dfrac{32}{5}$

.

$\dfrac{26}{7} \times \dfrac{5}{8}$

$\dfrac{135}{56}$

.

$\dfrac{2}{5} + \dfrac{3}{2} \times ( \dfrac{1}{4} \div \dfrac{3}{7} )$

$\dfrac{2}{5} + \dfrac{3}{2} ( \dfrac{1}{4} \times \dfrac{7}{3} )$

$\dfrac{2}{5} + \dfrac{3}{2} \times \dfrac{7}{12}$

$\dfrac{2}{5} + \dfrac{21 \div 3}{24 \div 3}$

$\dfrac{2}{5} + \dfrac{7}{8}$

$\dfrac{16 + 35}{40}$

$\dfrac{51}{40}$

.

$( \dfrac{4}{3} - \dfrac{1}{5} ) \div 3$

.

$\dfrac{17}{15} \times \dfrac{1}{3}$

$\dfrac{17}{45}$