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3x-2<7+x
3x-x < 7+2
2x < 9 |:2
x < 9/2
x < 4,5
b)
-2x+4> -0,5
-2x > -0,5 - 4
-2x > -4,5 |:(-2)
x < 2,25
c)
3x-15 > 2x
3x - 2x > 15
x > 15
e)
2(x-6)≤ 3-x
2x- 12 ≤ 3-x
2x + x ≤ 3+12
3x ≤ 15 |:3
x ≤ 5
f)
(x-3) - (2-x) < 8
x-3 - 2 + x < 8
2x - 5 < 8
2x < 8+5
2x < 13 |:2
x < 6,5
d) brak znaku między ułamkami
x<4.5
b) -2x>-4,5
x<
c) x-15>0
x>15
e)2x-12 -3+x ≤0
3x≤15
x≤5
f) x-3-2+x<8
2x-5<8
2x<13
x<6,5