Question

resolve essas expressões


a)3/5 +1/4 -3/10 b)2/5 : 6/5 . 15/4 c)1/6+ 3 . 4/9



me ajude fazendo o favor

Answer 1

a) 3/5 + 1/4 - 3/10
12 + 5 - 6/20
11/20

b) 2/5 ÷ 6/5
2/5 × 5/6
10/30
1/3

c) 1/6 + 3 × 4/9
1/6 + 12/9
1/6 + 4/3
1 + 8/6
9/6
3/2

Answer 2

Olá, boa noite ☺

Resoluções:

a)

3/5 +1/4 -3/10

m.m.c=20.

(12 + 5 - 6)/20 = 11/20.

b)

2/5 ÷ 6/5.

2/5 × 5/6 = 10/30 : 10/10 = 1/3.

c)

1/6 + 3 ×4/9

1/6 +12/9.

m.m.c=18.

(3 + 24)/18=27/18 : 9/9 = 3/2.

Bons estudos :)