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Sagot :

Hello,

7x + 8 = 2x - 14

7x - 2x = - 14 - 8

5x = -22

x = -22/5

2x - 6 = 1

2x = 1 + 6

2x = 7

x = 7/2 = 3.5

x + 8 = 20

x  = 20 - 8 = 12

2x - 3 = 5

2x = 5 + 3

2x = 8

x = 8/2 = 4

-5x + 1 = 9

-5x = 9 - 1

-5x = 8

x = -8/5

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