Bonjour,pourriez-vous m'aider pour résoudre ces équations de premiers degré,s'il vous plait 3x+2=x-10 5x+3=2x-3 7x-6=2x-46 4x+1-(x+6)=22 -5x-6=2(x+7)+1 Merci d'

bonjour

3 x + 2 = x - 10

3 x - x = - 10 - 2

2 x = - 12

x = - 6

5 x +3 = 2 x  - 3

5 x - 2 x = - 3 - 3

3 x = - 6

x = - 2

7 x - 6 = 2 x - 46

7 x - 2 x = - 46 + 6

5 x = - 40

x = - 8

4 x + 1 - x - 6 = 22

3 x = 22 - 1 + 6

3 x =  27

x = 9

- 5 x - 6 = 2 x + 14 + 1

- 5 x - 2 x = 14 + 1 + 6

- 7 x = 21

x = -  3

1)

3x+2 = x-10

3x - x = -10 -2

2x = -12

x = -6

S = {-6}

2)

5x+3 = 2x-3

5x - 2x = -3 - 3

3x = -6

x = -2

S = {-2}

3)

7x-6 = 2x-46

7x - 2x = -46 + 6

5x = - 40

x = -8

S = {-8}

4)

4x+1 - (x+6) = 22

4x + 1 - x - 6 = 22

3x = 22 -1 + 6

3x = 27

x = 9

S = {9}

5)

-5x-6 = 2(x+7) +1

-5x - 6 = 2x + 14 + 1

-5x - 2x = 14 + 1 + 6

-7x = 21

x = -3

S = {-3}