Question
Résoudre les équations:
(x+5)×2+3=5x-7
4 (x+1)=2 (x+5)
(x+5)×2+3=5x-7
4 (x+1)=2 (x+5)
Asked by: USER9249
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Answer (72)
(x + 5) * 2 + 3 = 5x - 7
2x + 10 + 3 = 5x - 7
2x + 13 = 5x - 7
13 + 7 = 5x - 2x
20 = 3x
20/3 = x
4(x + 1) = 2(x + 5)
4x + 4 = 2x + 10
4x - 2x = 10 - 4
2x = 6
x = 6/2
x = 3
2x + 10 + 3 = 5x - 7
2x + 13 = 5x - 7
13 + 7 = 5x - 2x
20 = 3x
20/3 = x
4(x + 1) = 2(x + 5)
4x + 4 = 2x + 10
4x - 2x = 10 - 4
2x = 6
x = 6/2
x = 3