bonjour c des équations à résoudre qui peux m’aider svp 3x+2=0 8x-1=31 7x+3=x+12

bonjour

3x+2=0

3x = -2

x = -2/3

8x-1=31

8x = 31+1

8x = 32

x = 32/8 = 4

7x+3=x+12

7x - x = 12 - 3

6x = 9

x = 9/6 = 3/2

bonjour

3 x + 2 = 0

3 x = - 2

  x = - 2/3

8 x - 1 = 31

8 x = 32

x = 4

7 x + 3 = x + 12

7 x - x = 12 - 3

6 x = 9

x = 9/6 = 3/2