Question

Determine o valor do incógnita:
5 - x - 20 = 5x - 10 - 7x
x + 6 = 2 - 3x

Answer 1

5 - x - 20 = 5x - 10 - 7x

- x-5x+7x=-10-5+20

1x=5

x=5/1

x=5

x + 6 = 2 - 3x

x+3x=2-6

4x=-4

x=-4/4

x=-1

Answer 2

Explicação passo-a-passo:

Determine o valor do incógnita:

1)

5 - x - 20 = 5x - 10 - 7x

- x - 5x + 7x = - 10 - 5 + 20

- 6x + 7x = - 15 + 20

x = 5

b)

x + 6 = 2 - 3x

x + 3x = 2 - 6

4x = - 4

x= - 4/4

x = - 1