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2014-11-10T10:48:57+02:00
2d-4<10
2d<10+4
2d<14
d<14/25
d<7

144:9>d-5
16>d-5
21>d

d:7>2
d>2*7
d>14


[(d-144:12)*3-2}:7<4
d-12)*3-2<7*4
(d-12)*3-2<28
3d-36-2<28 3d<28+36+2 3d<66 d<66/3 d<22