Question

Resolva as equações

A)10x-8-2=7x-4

B)3•(x-2)-(1-x)=13






Gente me ajudaaaaaaaaa

Answer 1

Resposta:

1) 3X – 4 = 2X + 8

3X- 2X = 8 + 4

X = 12

2) 7X – 2 + 4 = 10 + 5X

7X – 5X = 10 + 2 – 4

7X – 5X = 10 + 2 – 4

2X = 8

X = 8/2

X= 4

3) 4(X + 3) =1

4X + 12 = 1

4X = 1 – 12

X = -11/4

4) 5(2x -4) = 7 ( x + 1) – 3

10x – 20 = 7x + 7 -3

10x – 7x = 7 -3 + 20

3x = 24

x = 24/ 3

x = 8

5) x/3 + x/2 = 15

2x / 6 + 3x / 6 = 90 / 6

2x + 3x = 90

5x = 90

x = 90 / 5

x = 18

EXERCICIOS

1)Resolva as equações

a) 6x = 2x + 16 (R:4)b) 2x – 5 = x + 1 (R: 6)

c) 2x + 3 = x + 4 (R: 1)

d) 5x + 7 = 4x + 10 (R: 3)

e) 4x – 10 = 2x + 2 (R: 6)

f) 4x – 7 = 8x – 2(R:-5/4)

g) 2x + 1 = 4x – 7 (R:4)

h) 9x + 9 + 3x = 15 (R: ½)

i) 16x – 1 = 12x + 3 (R:1)j) 3x – 2 = 4x + 9 (R:-11)

l) 5x -3 + x = 2x + 9 (R:3)

m) 17x – 7x = x + 18 (R: 2)

n) x + x – 4 = 17 – 2x + 1 ( 11/2)

o) x + 2x + 3 – 5x = 4x – 9 ( R:2)p) 5x + 6x – 16 = 3x + 2x - 4 (R:2)q) 5x + 4 = 3x – 2x + 4 (R: 0 )

2) Resolva as seguintes equações

a) 4x – 1 = 3 ( x – 1) (R: -2)

b) 3( x – 2) = 2x – 4 (R:2)

c) 2( x – 1) = 3x + 4 ( R: -6)d) 3(x – 1) – 7 = 15 (R: 25/3)

e) 7 ( x – 4) = 2x – 3 (R: 5)

f) 3 ( x –2) = 4(3 – x) (R:18/7)

g) 3 ( 3x – 1) = 2 ( 3x + 2) ( R: 7/3)

h) 7 ( x – 2 ) = 5 ( x + 3 ) (R: 29/2)

i) 3 (2x – 1) = -2 ( x + 3) (R: -3/8)

j) 5x – 3( x +2) = 15 (R: 21/2)

k) 2x + 3x + 9 = 8(6 –x) (R:3)

l) 4(x+ 10) -2(x – 5) = 0 (R: -25)

m) 3 (2x + 3 ) – 4 (x -1) = 3 ( R: -5)

n) 7 (x – 1) – 2 ( x- 5) = x – 5 (R: -2)

o) 2 (3 – x ) = 3 ( x -4) + 15 (R: 3/5)

p) 3 ( 5 – x ) – 3 ( 1 – 2x) = 42 (R:10)

q) ( 4x + 6) – 2x = (x – 6) + 10 +14 (R:12)

r) ( x – 3) – ( x + 2) + 2( x – 1) – 5 = 0 ( R:6)s) 3x -2 ( 4x – 3 ) = 2 – 3( x – 1) ( R ½)t) 3( x- 1) – ( x – 3) + 5 ( x – 2) = 18 ( R: 4)

u) 5( x – 3 ) – 4 ( x + 2 ) = 2 + 3( 1 – 2x) (R:4)

3) Resolva as seguintes equações

a) 2x + 5 - 5x = -1 (R=2)

b) 5 + 6x = 5x + 2 (R=-3)

c) x + 2x - 1 - 3 = x (R=2)d) -3x + 10 = 2x + 8 +1 (R= 1/5)

e) 5x - 5 + x = 9 + x (R=14/5)f) 7x - 4 - x = -7x + 8 - 3x (R=12/16)

g) -x -5 + 4x = -7x + 6x + 15 (R=5)

h) 3x - 2x = 3x + 2 (R=-1)

i) 2 - 4x = 32 - 18x + 12 (R=3)

j) 2x - 1 = -3 + x + 4 (R= 2)l) 3x - 2 - 2x - 3 = 0 (R= 5)

m) 10 - 9x + 2x = 2 - 3x (R=2)

n) 4x - 4 - 5x = -6 + 90 (R= -88)

o) 2 - 3x = -2x + 12 - 3x (R=5)

Explicação passo-a-passo:

pontooooooo e espero ter ajudado bom final de dia ✌✌✌✌

Answer 2

Resposta:

A) X = 2

B) X = 5

Explicação da A):

10x - 8 -2 = 7x - 4

10x -7x = + 8 + 2 - 4

3x = 10 - 4

3x = 6

x = 6/3

x = 2

Explicação da B):

3(x - 2) - (1 - x) = 13

3x - 6 - 1 + x = 13

3x + x = 13 + 6 + 1

4x = 20

x = 20/4

x = 5