Question

Me ajudemmm!!

(A) 3x + 2 = x + 1

(B) 5x = 5

(C) 10m + 3 = m

(D) 2x - 8 = 3x - 10

(E) - 5x + 50 = 5x

(F) 20x - 140 = -5x

(G) 20x = -20

(H) x + 4 = 2x -3

(I) 2 + 2x = 24 - 9x

Answer 1

Resposta:

a)x=-1/2

b)x=1

c)x=-1/3

d)x=2

e)x=5

f)x=28/5

g)x=-1

h)x=7

i)x=2

Explicação passo-a-passo:

a) 3x+2=x+1

3x-x=1-2

2x=-1

x=-1/2

b)5x=5

x=5/5

x=1

c)10m+3=m

10m-m=-3

9m=-3

m=-3/9. {-3÷3=-1}/{9÷3=3}

m=-1/3

d)2x-8=3x-10

2x-3x=-10+8

-x=-2. x(-1)

x=2

e)-5x+50=5x

-5x-5x=-50

-10x=-50. x(-1)

10x=50

x=50/10

x=5

f)20x-140=-5x

20x+5x=140

25x=140

x=140/25. {140÷5=28}/{25÷5=5}

x=28/5

g)20x=-20

x=-20/20

x=-1

h)x+4=2x-3

x-2x=-3-4

-x=-7. x(-1)

x=7

i)2+2x=24-9x

2x+9x=24-2

11x=22

x=22/11

x=2

Answer 2

Resposta:

Explicação passo-a-passo:

A)

3x + 2 = x + 1

3x-x= 1 - 2

2x = - 1

x = - 1/2

(B)

5x = 5

x = 5/5

x = 1

(C)

10m + 3 = m

10m - m = 3

9m = 3 (:3)

3m = 1

m = 1/3

(D)

2x - 8 = 3x - 10

-8+10= 3x-2x

2 = x

x = 2

(E)

- 5x + 50 = 5x

50= 5x+5x

50= 10x

50/10= x

5 = x

x = 5

(F)

20x - 140 = -5x

20x+5x = 140

25x = 140 (:5)

5x = 28

x = 28/5

(G)

20x = -20

x = -20/20

x = - 1

(H)

x + 4 = 2x -3

4+3= 2x-x

7= x

x = 7

(I)

2 + 2x = 24 - 9x

2x+9x = 24-2

11x = 22

x = 22/11

x = 2