Verified answer

bonjour

3x-5=7

3x=7+5

3x=12

x=12/3

x=4

x-3=3x+4

x-3x=4+3

-2x=7

x=7/-2

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

4x+2=1-6x

4x+6x=1-2

10x=-1

x=-1/10

2x+1/3=x+4

2x-x=4-1/3

x=11/3

Verified answer

Bonjour,

résoudre les équations suivantes :

3x-5=7

3x - 5 + 5 = 7 + 5

3x = 12

3x/3 = 12/3

x = 4

X-3=3x+4

x - 3 + 3 - 3x = 3x + 4 - 3x + 3

-2x = 7

-2x/-2 = 7/-2

x = -7/2

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

2 * 2x + 2 * 1 = 1 - 6x

4x + 2 - 2 = 1 - 6x - 2

4x + 6x = -1 - 6x + 6x

10x = -1

10x/10 = -1/10

x = -1/10

2x+1/3=x+4

2x - x = 4 - 1/3

x = 12/3 - 1/3

x = 11/3