Solutions by everydaycalculation.com
19 - 18 is -172.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/9-1/8 1/9-2/8 1/18-1/8 1/9-1/16 3/9-1/8 1/9-3/8 1/27-1/8 1/9-1/24 5/9-1/8 1/9-5/8 1/45-1/8 1/9-1/40 7/9-1/8 1/9-7/8 1/63-1/8 1/9-1/56
© everydaycalculation.com