How do you find the lowest common factor of 6 and 14

The sixth grade art students are making a mosaic using tiles in the shape of right triangles.each tile has leg measures of 3 centimeters and 5 centimeters.i f there are 200 tiles in the mosaic what is the area of the mosaic.

Determine the relationship of ab and cd given the following points

The sum of two numbers is 12 and their difference is 18 what are the two numbers