-3x-4<19
19+4=23
3x<23
÷3 ÷3
×= > 23/3 or 7.6^87
A prime meridian is a meridian (a line of longitude) in a geographicalcoordinate system at which longitude is defined to be 0°. Together, a primemeridian and its antimeridian (the 180th meridian in a 360°-system) form a great circle.
