Solutions by everydaycalculation.com
120 - 720 is -310.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20-7/20 1/20-14/20 1/40-7/20 1/20-7/40 3/20-7/20 1/20-21/20 1/60-7/20 1/20-7/60 5/20-7/20 1/20-35/20 7/20-7/20 1/20-49/20
© everydaycalculation.com