Réduire chaque expression ►
a ► 2a-7+5a
b► 10b+9-7b+5
c► 5a-6-8a+9
d► a+8b-3a+6-b
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a ► 2a-7+5a
b► 10b+9-7b+5
c► 5a-6-8a+9
d► a+8b-3a+6-b
Merci beaucoup :$ ☻
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Verified answer
A = 7 a - 7b = 3 b + 14
c = - 3 a + 3
d = - 2a + 7 b + 6