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Andrearobart57
@Andrearobart57
April 2019
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Merci c'est urgent ! :)
Résous les équations suivantes :
a.23+16x=31
b.3x-14=9
c.2.5x+5.6=12
d.5x+1=2x+19
e.8x+3=x+15
f.7.8i-8=1.3i+2
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Rifyaa
A) 23-31=-16x
-8=-16x
x = -8/-16
b)3x=9+14
3x=23
x=23/3
c)2.5x=12-5.6
2.5x=7.6
x=7.6/2.5
d)5x-2x=19-1
3x=18
x=18/3=6
e)8x-x=15-3
7x=12
x=12/7
f)8i-1.3i=2+8
9.3i=10
i = 10/9.3
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-8=-16x
x = -8/-16
b)3x=9+14
3x=23
x=23/3
c)2.5x=12-5.6
2.5x=7.6
x=7.6/2.5
d)5x-2x=19-1
3x=18
x=18/3=6
e)8x-x=15-3
7x=12
x=12/7
f)8i-1.3i=2+8
9.3i=10
i = 10/9.3