2x = 7
x = 3,5
0,2x = 0,5
x = 2,5
4x = 5x + 1
4x - 5x = 1
- x = 1
x = - 1
4x + 7 = 6x - 1
4x - 6x = - 1 - 7
- 2x = - 8
2x = 8x
x = 4
reszty nie umiem, przepraszam
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2x = 7
x = 3,5
0,2x = 0,5
x = 2,5
4x = 5x + 1
4x - 5x = 1
- x = 1
x = - 1
4x + 7 = 6x - 1
4x - 6x = - 1 - 7
- 2x = - 8
2x = 8x
x = 4
reszty nie umiem, przepraszam