Question

Resolva as seguintes Equações do 1° Grau

A) 7×-35=3×+3

B) 3×-6=-4×+12

C) 2×+2-×+1=0

D) 5×+5-3×-6=0

E) 13+8×-4=5×+10

F) 4×+20+3×+15=21​

Answer 1

Resposta:

A) x=19/2

x=9,5

B) x=18/7

x≅2,571

C) x=-3

D) x=1/2

x=0,5

E) x=1/3

x=0,333...

F) x=-2

Explicação passo-a-passo:

A) 7×-35=3×+3

7x-3x=3+35

4x=38

x=19/2

x=9,5

B) 3×-6=-4×+12

3x+4x=12+6

7x=18

x=18/7

x≅2,571

C) 2×+2-×+1=0

x+3=0

x=-3

D) 5×+5-3×-6=0

2x-1=0

2x=1

x=1/2

x=0,5

E) 13+8×-4=5×+10

8x-5x=10+4-13

3x=1

x=1/3

x=0,333...

F) 4×+20+3×+15=21​

7x+35=21

7x=-14

x=-2

Answer 2

Oi...

Resolução:

a)

7x - 35 = 3x + 3

7x - 3x = 3 + 35

4x = 38

x = 38/4 ÷ 2

x = 19/2

b)

3x - 6 = - 4x + 12

3x + 4x = 12 + 6

7x = 18

x = 18/7

c)

2x + 2 - × + 1 = 0

x + 3 = 0

x = - 3

d)

5x + 5 - 3× - 6 = 0

2x - 1 = 0

2x = 1

x = 1/2

e)

13 + 8x - 4 = 5x + 10

9 + 8x = 5x + 10

8x - 5x = 10 - 9

3x = 1

x = 1/3

f)

4x + 20 + 3x + 15 = 21

7x + 35 = 21

7x = 21 - 35

7x = - 14

x = - 14/7

x = - 2

Boas lições.​