Question

como resolvo:

3/4 (2x/5-1)=4/5(x-1/2)

Answer 1

Resposta:

x = - 7/10

Explicação passo-a-passo:

3/4 (2x/5 - 1)=4/5(x - 1/2)

3/4 . 2x/5 - 3/4 = 4x/5 - 1/2.4/5

6x/20 (:2)/(:2) - 3/4 = 4x/5 - 4/10

3x/10 - 3/4 = 4x/5 - 4/10(:2)/(:2)

3x/10 - 3/4 = 4x/5 - 2/5

3x/10 - 3/4 = (4x-2)/5

(2.3x - 5.3)/20 = 4.(4x-2)/20

6x - 15= 16x - 8

- 15 + 8 = 16x - 6x

- 7 = 10x

10x = - 7

x = - 7/10

10,4,5: 2

5,2,5: 2

5,1,5: 5

1,1,1

= 2.2.5

= 20

R.:

x = - 7/10