Solutions by everydaycalculation.com
312 + 412 is 712.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+4/12 3/12+8/12 3/24+4/12 3/12+4/24 9/12+4/12 3/36+4/12 3/12+4/36 15/12+4/12 3/12+20/12 3/60+4/12 3/12+4/60 21/12+4/12 3/12+28/12 3/84+4/12 3/12+4/84
© everydaycalculation.com