Question

Resolva as equações do 1° Grau abaixo, demonstrando seu resultado através dos cálculos:

Grupo 1

a) 2x+8 = 10

b) 9x = 5+4

c) 7x+6 = 3x+10

d) 2x+5 = x+6

e) x+4 = 5

Grupo 2

a) 2x = 8+x+2

b) 10x = 4x+6

d) 5x = 2x+3

e) 7x+2 = 7+2x

Answer 1

a) 2x+8 = 10

2x = 10-8

2x = 2

x = 2/2

x = 1

b) 9x = 5+4

9x = 9

x =9/9

x = 1

c) 7x+6 = 3x+10

7x-3x = 10-6

4x = 4

x = 4/4

x = 1

d) 2x+5 = x+6

2x -x = 6-5

x = 1

e) x+4 = 5

x = 5-4

x = 1

Grupo 2

a) 2x = 8+x+2

2x-x = 10

x = 10

b) 10x = 4x+6

10x-4x = 6

6x = 6

x = 6/6

x = 1

d) 5x = 2x+3

5x-2x = 3

3x = 3

x = 3/3

x = 1

e) 7x+2 = 7+2x

7x-2x = 7-2

5x = 5

x = 5/5

x = 1

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Answer 2

Grupo 1

a) 2x+8 = 10

2x=10-8

2x=2

x=2/2

x=1

b) 9x = 5+4

9x=9

x=9/9

x=1

c) 7x+6 = 3x+10

7x-3x=10-6

4x=4

x=4/4

x=1

d) 2x+5 = x+6

2x-x=6-5

x=1

e) x+4 = 5

x=5-4

x=1

Grupo 2

a) 2x = 8+x+2

2x-x=8+2

x=10

b) 10x = 4x+6

10x-4x=6

6x=6

x=6/6

x=1

d) 5x = 2x+3

5x-2x=3

3x=3

x=3/3

x=1

e) 7x+2 = 7+2x

7x-2x=7-2

5x=5

x=5/5

x=1