Solutions by everydaycalculation.com
1563 - 3663 is -13.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/63-36/63 15/63-72/63 45/63-36/63 75/63-36/63
© everydaycalculation.com