Systèmes d'équations du premier degré

Résoudre les systèmes suivants: 

[Graphics:Images/serie2_gr_1.gif]
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[Graphics:Images/serie2_gr_3.gif]
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[Graphics:Images/serie2_gr_5.gif]
[Graphics:Images/serie2_gr_6.gif]
[Graphics:Images/serie2_gr_7.gif]
[Graphics:Images/serie2_gr_8.gif]
[Graphics:Images/serie2_gr_9.gif]
[Graphics:Images/serie2_gr_10.gif]
[Graphics:Images/serie2_gr_11.gif]
[Graphics:Images/serie2_gr_12.gif]
[Graphics:Images/serie2_gr_13.gif]
[Graphics:Images/serie2_gr_14.gif]
[Graphics:Images/serie2_gr_15.gif]
[Graphics:Images/serie2_gr_16.gif]
[Graphics:Images/serie2_gr_17.gif]
[Graphics:Images/serie2_gr_18.gif]
[Graphics:Images/serie2_gr_19.gif]
[Graphics:Images/serie2_gr_20.gif]
[Graphics:Images/serie2_gr_21.gif]
[Graphics:Images/serie2_gr_22.gif]
[Graphics:Images/serie2_gr_23.gif]
[Graphics:Images/serie2_gr_24.gif]
[Graphics:Images/serie2_gr_25.gif]
[Graphics:Images/serie2_gr_26.gif]
[Graphics:Images/serie2_gr_27.gif]
[Graphics:Images/serie2_gr_28.gif]
[Graphics:Images/serie2_gr_29.gif]
[Graphics:Images/serie2_gr_30.gif]

Solutions

Converted by Mathematica      November 23, 2000