Question

alguem me responde por favor


a)2(x-2)=3(x+2)


b)3x − 5 = 9x + 7


c) x − 9 = 3x + 5


d) 9x − 13 = 2(x − 3)


e) −2x + 3 = 0


f) f(x) = −6x + 18


g) f(x) = −2x + 1


h)

x
_ + 3(−x + 2) = −3 + 2x
2

Answer 1

Explicação passo-a-passo:

a)2(x-2)=3(x+2)

2x - 4 = 3x + 6

2x - 3x = 6 + 4

-x= 10 (-1)

x= -10

b)3x − 5 = 9x + 7

3x-9x = 7+5

-6x = 12 ( -1)

x = -12/6

x= -2

c) x − 9 = 3x + 5

x - 3×= 5 + 9

-2× = 14 (-1)

×= -14/2

×= -7

d) 9x − 13 = 2(x − 3)

9× - 13 = 2× - 6

9× - 2× = -6 + 13

7x = 7

×= 7/7

×= 1

e) −2x + 3 = 0

-2x = -3 (-1)

×= 3/2

f) f(x) = −6x + 18

0 = -6× + 18

6×= 18

×= 18/6

×= 3

g) f(x) = −2x + 1

0= -2× +1

2× = 1

×= 1/2

h) x/2+ 3(−x + 2) = −3 + 2x

×/2 - 3× + 6 = -3 +2× (x2)

x - 6x + 12 = -6 + 4×

-5× + 12 = -6 + 4×

-5× - 4× = -6 - 12

-9× = - 18 (-1)

×= 18/9

×= 2