Solutions by everydaycalculation.com
2870 - 3070 is -135.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/70-30/70 28/70-60/70 84/70-30/70 28/70-90/70
© everydaycalculation.com