Question

Por favor eu preciso de ajuda

1-Calcule o valor de x:

a) 4x + 60 = 80 + 2x

b) 3×-10=2×-8

c) 5x+10= 10x - 35

d) 8x - 15 = 3x

e) 4x-8= 0

f) 6x+2-18+ 6x = 20

g) 9x + 12 = 11x

h) 25x+14= 20x +16

Answer 1

Resposta e Explicação passo a passo:

Organizar os termos semelhantes, isolar a incógnita e resolver

a) 4x + 60 = 80 + 2x

4x-2x=80-60

2x=20

x=20/2=10

b) 3×-10=2×-8

3x-2x=-8+10

x= 2

c) 5x+10= 10x - 35

35+10=10x-5x

45=5x

5x=45

x=45/5

x= 9

d) 8x - 15 = 3x

8x-3x=15

5x=15

x=15/5

x=3

e) 4x-8= 0

4x=8

x=8/4

x=2

f) 6x+2-18+ 6x = 20

6x+6x=20-2+18

12x=36

x=36/12

x=3

g) 9x + 12 = 11x

12=11x-9x

12=2x

x=12/2

x=6

h) 25x+14= 20x +16

25x-20x=16-14

5x=2

x=2/5=0,4

Espero ter te ajudado!

Answer 2

a) 4x + 60 = 80 + 2x

4x-2x=80-60

2x=20

x= 20/10

x=2

b) 3×-10=2×-8

3x-2x= -8+10

x=2

c) 5x+10= 10x - 35

5x-10x= -35-10

-5x= -45 (-1)

x=45/5

x=9

x=

d) 8x - 15 = 3x

8x-3x= 15

5x=15

x=15/5

x=3

e) 4x-8= 0

4x=8

x=8/4

x=2

f) 6x+2-18+ 6x = 20

6x+6x=20-2+18

12x=36

x= 36/12

x=3

g) 9x + 12 = 11x

9x-11x= -12

-2x= -12 (-1)

x=12/2

x=6

h) 25x+14= 20x +16

25x-20x=16-14

5x=2

x=2/5

x=0.4