Solutions by everydaycalculation.com

1550 + 2070 is 4170.

- Find the least common denominator or LCM of the two denominators:

LCM of 50 and 70 is**350**

Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,

1550 = 15 × 750 × 7 = 105350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,

2070 = 20 × 570 × 5 = 100350 - Add the two like fractions:

105350 + 100350 = 105 + 100350 = 205350 - 205/350 simplified gives 4170
- So, 15/50 + 20/70 = 41/70

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:

Android and iPhone/ iPad

Related: ^{30}/_{50}+^{20}/_{70} ^{15}/_{50}+^{40}/_{70} ^{45}/_{50}+^{20}/_{70} ^{15}/_{50}+^{60}/_{70} ^{75}/_{50}+^{20}/_{70}

© everydaycalculation.com