Question

Qual o valor de x:
x + x/2 + 34 = -50
Resolva a equação:
2x – 3(4 – x) = 5 + 4(2x + 1)

me ajuda pfvrrr p agr

Answer 1

1) x + x/2 + 34 = -50

2x + x + 68 = -100

3x + 68 = -100

3x = -100 - 68

3x = -168

x = - 168/3

x = -56

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

2x - 12 + 3x = 5 + 8x + 4

5x - 12 = 9 + 8x

5x - 8x = 9 + 12

-3x = 21 (.-1)

3x = -21

x = - 21/3

x = -7

Answer 2

Resposta:

$\sf x + \dfrac{x}{2} + 34 = - \; 50$

$\sf \dfrac{2x}{2} + \dfrac{x}{2} + \dfrac{68}{2} = - \; \dfrac{100}{2}$

$\sf 2x + x + 68 = -\:100$

$\sf 3x = -\: 100 -\: 68$

$\sf 3x = -\: 168$

$\sf x = -\: \dfrac{168}{3}$

$\boxed{ \boxed { \boldsymbol{ \sf \displaystyle x = -\: 56 }}} \quad \gets \mathbf{ Resposta }$

$\sf 2x -3(4-x) = 5 + 4(2x + 1)$

$\sf 2x - 12 +3x = 5 + 8x + 4$

$\sf 2x + 3x - 8x = 5 +4 + 12$

$\sf 5x -8x = 9 + 12$

$\sf - 3x = 21$

$\sf x = -\: \dfrac{21}{3}$

$\boxed{ \boxed { \boldsymbol{ \sf \displaystyle x = -\: 7 }}} \quad \gets \mathbf{ Resposta }$

Explicação passo-a-passo: