Question

a) 12 x + 3 = x - 85
b) - x + 6 = 2 x - 12
c) 2 x + 3 = - 3 x - 22
d) 6 ( 3 x + 3 ) = - 72
ALGUÉM ME AJUDA ​

Answer 1

Resposta:-8,6,25,-5

a)12x+3=x-85

12x-x=-85-3

11x=-88

x=$\frac{-88}{11}$ x=-8

b)-x+6=2x-12

-x-2x=-12-6

-3x=-18

-x=$\frac{-18}{3}$  -x=-6   x=6

c)2x+3=3x-22

2x-3x=-3-22

-x=-25   x=25

d)6(3x+3)=-72

18x+18=-72

18x=-72-18

18x=-90  

x=$\frac{-90}{18}$ x=-5

Explicação passo a passo:

Answer 2

Resposta:

Explicação passo a passo:

a)

12x+3=x−85

12x+3−x=−85

11x+3=−85

11x=−85−3

11x=−88

$x = \frac{-88}{11}$

x = -8

B)

−x+6=2x−12

−x+6−2x=−12

−x−2x=−12−6

−x−2x=−18

−3x=−18

x = $\frac{-18}{-3}$

x = 6

C)

2x+3=−3x−22

2x+3+3x=−22

5x+3=−22

5x=−22−3

5x=−25

$x = \frac{-25}{5}$

x=−5

D)

6(3x+3)=−72

* Divida ambos os lados por 6.

$3x + 3 = \frac{-72}{6}$

3x+3=−12

3x=−12−3

3x=−15

$x = \frac{-15}{3}$

x=−5