Question

a) x - 17 = -9

b) 3. (x +2) + 5 = x + 12

c) 2x = -7

d) 3x + 2 = 2x - 11

e) 2x = 16

f) 2x + 14 = 5x - 1

g) 2.(3 - y) + 7.(2 - y) = 15 - 4y

h) 4x - 5 = 6x + 11

i) 2.(x - 2) + 5.( 2 - x) + 6.(x + 1)= 0

i) 3. (x - 2) - (1 - x) = 13​

Answer 1

Olá! Bom dia!

Resposta:

a) x - 17 = -9

x= -9+ 17

x= 8

b) 3. (x +2) + 5 = x + 12

3x+6+5= x+12

3x-x= 12-6-5

2x= 1

x= 1/2

x= 0,5

c) 2x = -7

x= -7/2

x= -3,5

d) 3x + 2 = 2x - 11

3x-2x= -11-2

x= -13

e) 2x = 16

x= 16/2

x= 8

f) 2x + 14 = 5x - 1

2x-5x= -1-14

-3x= -15   .(-1)

x= 15/3

x=5

g) 2.(3 - y) + 7.(2 - y) = 15 - 4y

6-2y+ 14-7y= 15-4y

2y-7y+4y= 15-6-14

-y= -5   .(-1)

y= 5

h) 4x - 5 = 6x + 11

4x- 6x= 11+5

-2x= 16 .(-1)

x= -16/2

x=-8

i) 2.(x - 2) + 5.( 2 - x) + 6.(x + 1)= 0

2x-4+10-x+6x+1=0

2x-x+6x= -4+10+1

7x= 7

X= 1

i) 3. (x - 2) - (1 - x) = 13​

3x-6-1+x= 13

3x+x= 13+6+1

4x= 20

X= 20/4

X= 5

ESPERO TER LHE AJUDADO! ❤