Solutions by everydaycalculation.com
1230 - 1630 is -215.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30-16/30 12/30-32/30 12/60-16/30 12/30-16/60 36/30-16/30 12/30-48/30 12/90-16/30 12/30-16/90 60/30-16/30 12/30-80/30 84/30-16/30
© everydaycalculation.com