Website Statistics EXERCICE 1B2 Résoudre ces équations gta5x 25 0b3x1 7C7x132d4x30e43x11f5x7

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hirondelle52

Bonjour;

a.

5x – 25 = 0

5x=25

x =25/5

x = 5

b.

3x+1 = 7

3x= 7-1

3x =6

x= 6/3

x = 2

C.

7x+13=-2

7x = -2-13

7x = -15

x= -15/7

d.

4x-3=0

4x = 3

x= 3/4 = 0,75

e.

4-3x=11

4-11 =3x

-7 = 3x

x = -7/3

f.

5-x=7

5-7= x

-2 =x

x = -2

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