Résoudre : ⦁ x+5=1 ⦁ x+5=-1 ⦁ x-4=-2 ⦁ x-4=2 ⦁ 5x=2x+1 ⦁ 3x=2x-6 ⦁ 2x+10=x-2 ⦁ 5x-8=3x+2 ⦁ 4x+14=2x+4 ⦁ x-10=-3x ⦁ 3,2x+4,5=0,5x-1 ⦁ -4+(2/3)x=-x+2 ⦁ 4(x-1)=1 ⦁

Réponse:

Bonjour

Explications étape par étape:

1) x + 5 = 1

x = - 4

2) x + 5 = - 1

x = - 6

3) x - 4= - 2

x = 2

4) x - 4 = 2

x = 6

5) 5x = 2x + 1

3x = 1

X = 1/3

6) 3x = 2x-6

x = - 6

7) 2x + 10 = x - 2

X = - 12

8) 5x-8=3x+2

2x = 10

X = 5

9) 4x + 14 = 2x +4

2x = -10

x = - 5

10) x - 10 = - 3x

4x = 10

X = 2.5

11)3.2x + 4.5 = 0,5x - 1

2.7x = - 5,5

X = - 5,5/2.7

12) - 4+(2/3)x = - x + 2

(5/3)x = 6

X = 18/5

13) 4(x-1)=1

4x - 1 = 1

4x = 2

X = 0,5

14) 3(2+x)= 2

6+ 3x = 2

3x = - 4

X = - 4/3

15) 3(2x + 1) = 5x + 7

6x + 3 = 5x + 7

X = 4