Question

alguem bom em matemática pode me ajudar???​

Answer 1

Resposta:

a)

$\sf \dfrac{3}{4} + \dfrac{2}{8} = \\\\\sf \dfrac{6}{8} + \dfrac{2}{8} = \\\\\sf \dfrac{8}{8} = 1$

b)

$\sf \dfrac{1}{2} + \dfrac{3}{6} = \\\\\sf \dfrac{3}{6} + \dfrac{3}{6} = \\\\\sf \dfrac{6}{6} = 1$

c)

$\sf \dfrac{3}{2} - \dfrac{3}{6} = \\\\\sf \dfrac{9}{6} - \dfrac{3}{6} = \\\\\sf \dfrac{6}{6} = 1$

d)

$\sf \dfrac{5}{2} - \dfrac{3}{4} =$

$\sf \dfrac{10}{4} - \dfrac{3}{4} =$

$\sf \dfrac{7}{4}$

Explicação passo-a-passo:

Answer 2

a)…3/4 + 2/8 = 3/4 + 1/4 = 4/4 = 1

.

b)...1/2 + 3/6 = 1/2 + 1/2 = 2/2 = 1

.

c)...3/2- 3/6 = 3/2 - 1/2 = 2/2 = 1

.

d)...5/2 - 3/4. .... (m.m.c. = 4)

......10/4 - 3/4 = 7/4

.

(Espero ter colaborado)