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Melly22
@Melly22
April 2019
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9x = 3(x+8)
3(2t + 5) = 4(5t+7)
2(3x + 4) - 5(1 - 2x) = 7(2x-3) + 12
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Commentaires (2)
Bonsoir,
9x = 3(x+8)
9x = 3x + 24
9x - 3x = 24
6x = 24
x = 24/6
x = 4
3(2t + 5) = 4(5t+7)
6t + 15 = 20t + 28
6t - 20t = 28 - 15
-14t = 13
t = -13/14
2(3x + 4) - 5(1 - 2x) = 7(2x-3) + 12
6x + 8 - 5 + 10x = 14x - 21 + 12
6x + 10x - 14x = -21 + 12 - 8 + 5
2x = -12.
x = -12/2
x = -6
1 votes
Thanks 0
Melly22
merci
Melly22
merci
Commentaires (2)
9x = 3x +24
9x - 3x = 24
6x = 24
x = 24/6
x = 4
3(2t + 5) = 4(5t+7)
6t + 15= 20t + 28
15-28 = 20t - 6t
-13 = 14t
t = -13/14
2(3x + 4) - 5(1 - 2x) = 7(2x-3) + 12
6x + 8 - 5 + 10x = 14x - 21 + 12
6x + 10x - 14x = -21 + 12 + 5 - 8
2x = -12
x = -6
2 votes
Thanks 0
Melly22
merci
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9x = 3(x+8)
9x = 3x + 24
9x - 3x = 24
6x = 24
x = 24/6
x = 4
3(2t + 5) = 4(5t+7)
6t + 15 = 20t + 28
6t - 20t = 28 - 15
-14t = 13
t = -13/14
2(3x + 4) - 5(1 - 2x) = 7(2x-3) + 12
6x + 8 - 5 + 10x = 14x - 21 + 12
6x + 10x - 14x = -21 + 12 - 8 + 5
2x = -12.
x = -12/2
x = -6
9x = 3x +24
9x - 3x = 24
6x = 24
x = 24/6
x = 4
3(2t + 5) = 4(5t+7)
6t + 15= 20t + 28
15-28 = 20t - 6t
-13 = 14t
t = -13/14
2(3x + 4) - 5(1 - 2x) = 7(2x-3) + 12
6x + 8 - 5 + 10x = 14x - 21 + 12
6x + 10x - 14x = -21 + 12 + 5 - 8
2x = -12
x = -6