resoudre cette equation 7x-2 egale 5-x

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Grade: Education Subject: mathematiques
resoudre cette equation 7x-2 egale 5-x
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Answer (38)

Best Answer
(112)
7x - 2 = 5 - x
7x + x - 2 = 5 - x + x
8x - 2 + 2 = 5 + 2
8x = 7
x = 7/8
x = 0,875
(93)
7x-2 = 5-x
7x-2+x = 5-x+x
8x-2=5
8x-2+2=5+2
8x=7
8x/8=7/8
x=7/8