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1 Résous chaque équation.
d. - 6x - 5 = 0
a. 8x + 3 = 0
b. 2x - 9 = 0
c. 49 - 7x = 0
h. 20 - 4x = - 4
e. 5x + 12 = 3
f. 10x + 1 = - 7
g. 9x - 2 = 6​


Sagot :

d) -6✘ - 5 = 0
-6✘ = 5
✘ = 5/-6
———————————

a) 8✘ + 3 = 0
✘ = -3/8

———————————

b) 2✘ -9 = 0
✘ = 9
✘ = 9/2

—————————

c) 49-7✘= 0
-7✘= -49
✘= -49/-7
✘= 7

—————————————

h) 20 - 4✘ = -4
-4✘ = -4 -20
✘ = -24/-4
✘ = 6
————————————-

e) 5✘ + 12 = 3
✘ = 9/5

—————————————-

f) 10✘ + 1 = 7
✘ = 6/10

————————————-

g) 9✘ -2 = 6
✘ = 8/9

Bonjour

Résous chaque équation.

d. - 6x - 5 = 0

- 6x = 5

x = - 5/6

a. 8x + 3 = 0

8x = - 3

x = - 3/8

b. 2x - 9 = 0

2x = 9

x = 9/2

c. 49 - 7x = 0

- 7x = - 49

x = 49/7

x = 7

h. 20 - 4x = - 4

- 4x = - 4 - 20

- 4x = - 24

x = 24/4

x = 6

e. 5x + 12 = 3

5x = 3 - 12

5x = - 9

x = - 9/5

f. 10x + 1 = - 7

10x = - 7 - 1

10x = - 8

x = - 8/10

x = - 4/5

g. 9x - 2 = 6​

9x = 6 + 2

9x = 8

x = 8/9.