Add 70/80 and 4/18
70/80 + 4/18 is 79/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
4/18 = 4 × 40/18 × 40 = 160/720 - Add the two like fractions:
630/720 + 160/720 = 630 + 160/720 = 790/720 - 790/720 simplified gives 79/72
- So, 70/80 + 4/18 = 79/72
In mixed form: 17/72
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