Question

Resolva as operações:

a)1 /2 + 3 /5 = b) 1 /2 - 3 /5 = c) 3 /7 + 2 /5 = d) 3 /7 - 2 /5=
me ajude pfv mostre o calculo

Answer 1

Explicação passo-a-passo:

.

$\dfrac{1}{2} + \dfrac{3}{5}$

$\dfrac{5 + 6}{10}$

$\dfrac{11}{10}$

.

$\dfrac{1}{2} - \dfrac{3}{5}$

$\dfrac{5 - 6}{10}$

$- \dfrac{1}{10}$

.

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

$\dfrac{15 + 14}{35}$

$\dfrac{29}{35}$

.

$\dfrac{3}{7} - \dfrac{2}{5}$

$\dfrac{15 - 14}{35}$

$\dfrac{1}{35}$