Question

resolva as questoes
1- 5x/10 - 10 = x/2 + 1/4

2- 5x/2 = 2x - 2/3 + 14/2

3- 2x-7/5 = x+3/8

Answer 1

Resposta:

ver explicação

Explicação passo-a-passo:

1) 5x/10 - 10 = x/2 + 1/4

5x/10 - x/2 = 10 + 1/4

x/2 - x/2 = 21/4

0 ≠ 21/4 indefinido

2) 5x/2 = 2x - 2/3 + 14/2

5x/2 - 2x = 7 - 2/3

(5x - 4x)/2 = (21 - 2)/3

x/2 = 19/3

x = 2 × 19/3

x = 38/3

3) 2x-7/5 = x+3/8

2x - x = 3/8 + 7/5

x = (15 + 56)/40

x = 71/3

MMC

8. 5 | 2

4. 5 | 2

2. 5 | 2

1. 5 | 5

1. 1 | → 2³.5 = 8.5 = 40