bonsoir
j'en fais un
10 x + 7 y = 11
5 x + 4 y = 8
- 10 x - 8 y = - 16
- y = - 5
y = 5
10 x + 35 = 11
10 x = 11 - 35
10 x = - 24
x = - 2.4
S ( - 2.4 ; 5 )
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bonsoir
j'en fais un
10 x + 7 y = 11
5 x + 4 y = 8
10 x + 7 y = 11
- 10 x - 8 y = - 16
- y = - 5
y = 5
10 x + 35 = 11
10 x = 11 - 35
10 x = - 24
x = - 2.4
S ( - 2.4 ; 5 )