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merci toute cette colonne svp vous pouvez détailler les calculs svp merci d’avance

Merci Toute Cette Colonne Svp Vous Pouvez Détailler Les Calculs Svp Merci Davance class=

Sagot :

bonjour

8x - 7 = 9

8x - 7 + 7 = 9 + 7

8x            = 16

8x / 8     = 16/8

x = 2

10x + 1 = 27

10x + 1 - 1 = 27 - 6

10x           = 21

10x/10      = 21/10

x= 2,1

8x - 9 = 3x + 56

8x - 9 + 9 = 3x + 56 + 9

8x            = 3x + 65

8x - 3x    = 3x - 3x + 65

5x           =                 65

5x/5x      = 65/5

x = 13

plus rapide

8x + 4 = 4x + 28

8x - 4x = 28 - 4

4x = 24

x = 6

10x + 3 = 6x + 7

4x = 4

x = 1

10x + 4 = 2x + 108

8x = 104

x = 13

11x + 1 = 2x + 100

9x = 99

x = 11

9x - 1 = 2x + 13

7x = 14

x = 2

6x - 12 = 5x - 10

x = 2

2x - 13 = x - 10

3x = 3

x = 1

...

Bonjour,

8x-3x = 56+9

5x = 65

x= 65/5

x= 13

10x-6x = 7-3

4x = 4

x= 4/4

x=1

11x-2x = 100-1

9x = 99

x = 99/9

x= 11

6x-5x= -10+12

x = 2

12x-2x = 67+3

10x = 70

x = 70/10

x= 7

8x-4x = 28 -4

4x = 24

x = 24/4

x= 6

10x-2x = 108 -4

8x = 104

x= 104/8

x=13

9x-2x = 13+1

7x = 14

x= 14/7

x= 2

2x-x = -10 +13

x = 3

12x -2x = 18 +12

10x = 30

x = 30/10

x = 3