Question

Resolva as equacoes :

a ) -3x-17=-21

B ) 2x-8=-7x

C ) 3x+2=2x-11


Boa sorte

Ps : quero as contas ​

Answer 1

a ) -3x-17=-21

- 3x = - 21 + 17

- 3x = - 4 (-1)

3x = 4

x= 4/3

B ) 2x-8=-7x

2x + 7x = 8

9x = 8

x= 8/9

C ) 3x+2=2x-11

3x - 2x = - 11 - 2

x= - 13

Answer 2

Explicação passo-a-passo:

a ) -3x-17=-21

-3x-17=-21

-3x=-21+17

-3x=-4

x=-4/-3

x=4/3

B ) 2x-8=-7x

2x-8=-7x

2x+7x=8

9x=8

x=8/9

C ) 3x+2=2x-11

3x+2=2x-11

3x-2x=-11-2

x=-13

Espero ter ajudado!