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bonsoir
x + 7 = 0
x = - 7
x - 1 = 0
x = 1
2 x + 4 = 0
2 x = - 4
x = - 2
3 x - 9 = 0
3 x = 9
x = 3
3 x - 9 = 2
3 x = 2 - 9
3 x = - 7
x = - 7/3
- x + 4 = 6
- x = 6 - 4
- x = 2
x = - 2
- 4 - 3 x = 6
- 3 x = 6 + 4
- 3 x = 10
x = - 10/ 3
allez continue, tu as vu comment on fait
Explications étape par étape :
a. x + 7 = 0
⇔ x = -7
b. x - 1 = 0
⇔ x = 1
c. 2x + 4 = 0
⇔ 2x = -4
⇔ x = -4/2
⇔ x = -2
d. 3x- 9 = 0
⇔ 3x = 9
⇔ x = 9/3
⇔ x = 3
e. 3x - 9 = 2
⇔ 3x = 2 + 9
⇔ 3x = 11
⇔ x = 11/3
f. -x + 4 = 6
⇔ -x = 6 - 4
⇔ -x = 2
⇔ x = -2
g. -4 - 3x = 6
⇔ -3x = 6 + 4
⇔ -3x = 10
⇔ x = -10/3
h. -5x - 15 = 0
⇔ -5x = 15
⇔ x = 15/-5
⇔ x = -3
i. -5x - 3 + 7x = 0
⇔ 2x = 3
⇔ x = 3/2
j. 2 + 6x - 4 = 3
⇔ 6x = 3 - 2 + 4
⇔ 6x = 5
⇔ x = 5/6
k. -4 - 3x = 6 + 5x
⇔ -3x - 5x = 6 + 4
⇔ -8x = 10
⇔ x = 10/-8
⇔ x = -5/4
l. -6x + 2 = 9 - 3x
⇔ -6x + 3x = 9 - 2
⇔ -3x = 7
⇔ x = -7/3
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If you want to meet me, I'm here - is.gd/MKV2Cs