Related Post: 1 2 3 4 18 1 2 3 4 5 To 18 1 2 3 4 5 To 180 (- 1 3 2 X 18 /- 4 1 2 3 3n 4 5n 18 1 2 18x 10 )=- 3 4 16x 20 Divide 180 Into 1 2 3 4 18 1 2 Plus 3 4 18 1 2 Minus 3 4 18 1 2 Minus 20 3 4