bonjour
A = 13 + x - 6
= x + 7
B = - 5 - 4 + 2 x
= 2 x - 9
C = 10 - x - 3 - 3 x + 6
= - 4 x + 13
d = 5 + 2 x + 7 + 7 x
= 9 x + 12
E = x - 8 - 2 - 4 x - 9 + 5 x
= 2 x - 19
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bonjour
A = 13 + x - 6
= x + 7
B = - 5 - 4 + 2 x
= 2 x - 9
C = 10 - x - 3 - 3 x + 6
= - 4 x + 13
d = 5 + 2 x + 7 + 7 x
= 9 x + 12
E = x - 8 - 2 - 4 x - 9 + 5 x
= 2 x - 19