Question

p)5. (X-2) = 2. (6x +3
q) 2.(3x-1) +2.(3-x)=0
R) 7. (x-1) = 2 (3x+1).
s) 2 (3-y) +7 (2-y) = 15 - 4y
t) 2. (x-2)+5. (2-x)+6. (x +
u) 3. (x-2) - (9-x) = 13
V) x - (x + 1) = 12 - (3x-2)
w)x/2 = 12/3
x) 2x/3 + 1/2 = x/4-3/2
y) x/3-1 + 3/4= x/2 - 1/4​

Answer 1

Resposta:

p) x= 16/7

q) x= -1

r) x= 9

s) x= 1

u) x = 7

v) x=5

w) x=8

x) x=-24/5

y) x=0

Explicação:

p) 5. (X-2) = 2. (6x +3)

5x - 10 = 12x +6

5x - 12x = 6+10

-7x = 16 (-1)

x = 16/7

q) 2.(3x-1) +2.(3-x)=0

6x - 2 + 6 - 2x = 0

6x + 4 - 2x = 0

4x = -4

x= -4/4

x = -1

R) 7. (x-1) = 2 (3x+1)

7x - 7 = 6x + 2

7x - 6x = 2+7

x = 9

s) 2 (3-y) +7 (2-y) = 15 - 4y

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

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

-5y = -5 (-1)

y= 5/5

y= 1

t) 2. (x-2)+5. (2-x)+6. (x + (falta o resto)

u) 3. (x-2) - (9-x) = 13

3x - 6 - 9 + x = 13

3x + x = 13 + 6 + 9

4x = 28

x = 28/4

x = 7

V) x - (x + 1) = 12 - (3x-2)

x-x-1 = 12 - 3x +2

-1 = 14 -3x

3x = 14+1

x=15/3

x=5

w)x/2 = 12/3

x/2=4

2.x/2=2.4

x=2.4

x=8

x) 2x/3 + 1/2 = x/4-3/2

8x+6=3x-18

8x-3x=-18-6

5x=-24

x=-24/5

y) x/3-1 + 3/4= x/2 - 1/4​

x/3-1/=x/2-1/4 CANCELE OS TEMOS IGUAIS

x/3 = x/2

2x=3x

2x-3x=0

-x=0 (-1)

x=0