Question

Gente Preciso desses contas para amanha me ajudem pfv!

x/4 -1= 5/6

x -1+7=5x

3+9 -2= 10

1/2x -6 +x= 4

Answer 1

CÁLCULOS:

1)

x/4 - 1 = 5/6

x - 1 = 5/6 • 4

x - 1 = 20/6

x = 20/6 + 1

x = 20/6 + 1/1

x = (20 + 6) / 6

x = 26/6

x = 13/3

x = 13/3OU

x = 13/3OUx = 3,5

2)

x - 1 + 7 = 5x

x - 5x = - 7 + 1

- 4x = - 6

x = (- 6) ÷ (- 4)

x = 6/4

x = 3/2

x = 1,5

3)

3 + 9 - 2x = 10

- 2x = 10 - 3 - 9

- 2x = - 2

x = 2 ÷ 2

x = 1

4)

½x - 6 + x = 4

½x + x = 4 + 6

x/2 + x = 4 + 6

x + x = 10 ÷ 2

2x = 5

x = 5 ÷ 2

x = 5/2

x = 5/2OU

x = 5/2OUx = 2,5