Substract (9g3 13g2 - 7g - 10) - (7g3 - 11g2 - 6g - 9)

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.

simple 80 pieces in 1 sercing so 80*47=3760+20=3780