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3x-1\2x>6+1
2,5x>7 /:2,5
x>2,8
1\2x+2x-x>-6+1
1,5x> -5 /:1,5
x> -1 1/3
0,5x+x-2x>-1-6
-0,5x>-7 /:-0,5
x< 3,5
2x + 4x - 2 > x + 12
6x - 2 > x + 12
5x > 14/: 5
x > dwa i 4 piąte (2 4/5)
b) ½x + 6 +2x - 1 > x / razy 2
x + 12 +4x - 2 > 2x
5x +10 > 2x
3x > -10 /:3
x > -3 i 1/3
c) ½x + 6 + x > 2x - 1 /razy 2
x +12 + 2x > 4x -2
3x + 12 > 4x - 2
-x > -14/:-1
x < 14