7/12-(1/4). first you need a common denominator which is 12. in the first fraction we already have a 12, so we don't need to multiply times anything, but the second fraction already has a 4, so what times 4 is 12, 3.
a place along a road, border, etc., where travelers are stopped for inspection. 2. a point or item, especially in a procedure, for notation, inspection, or confirmation. Origin of checkpoint. 1935-1940.
an official place at which people crossed the border between East Berlin and West Berlin during the time when the city was divided. It was opened in 1961. Checkpoint Charlie was moved in 1990 to a museum, and this was seen as a symbol of the end of the Cold War. Check pronunciation: Checkpoint Charlie Other Links