Question

pfvr me ajudem!!! ;-; 1)calcule o valor das expressoes: A) 5/8+1/2-2/3= B)5+ 1/3-1/10= C)7/8-1/2-1/4= D) 1 2/5+3+1/10= E)1/2+1/6vezes2/3=

Answer 1

Oi....

Resolução:

a)

5/8 + 1/2 - 2/3  ⇒mmc de 8 , 2 , 3 = 24

15 + 12 - 16/24

27 - 16/24

11/24

b)

5 + 1/3 - 1/10 ⇒ mmc de 1, 3, 10 = 30

150 + 10 - 3/30

160 - 3/30

157/30

c)

7/8 - 1/2 - 1/4 ⇒mmc de 8, 2, 4 = 8

7 - 4 - 2/8

7 - 6/8

1/8

d)

1 2/5 + 3 + 1/10

7/5 + 3 + 1/10 ⇒mmc de 5, 1, 10 = 10

14 + 30 + 1/10

45/10 ÷ 5

9/2

e)

1/2 + 1/6 × 2/3

1/2 + 1/3 × 1/3

1/2 + 1/9⇒ mmc de 2, 9 = 18

9 + 2/18

11/18

Bons estudos.