Calcule: 4.(x+3)=20

5.(2x-1)=2.(x+4)

10-2(x+3)=8+3.(2x+5)

3x - 1 = x - 2
5     2        5

x + 3 = 2x -1
2    4     6   3

3y - 1 = 3 - 2y
2           4
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