Add 18/90 and 15/64
18/90 + 15/64 is 139/320.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 64 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 90 × 32 = 2880,
18/90 = 18 × 32/90 × 32 = 576/2880 - Likewise, for the 2nd fraction, since 64 × 45 = 2880,
15/64 = 15 × 45/64 × 45 = 675/2880 - Add the two like fractions:
576/2880 + 675/2880 = 576 + 675/2880 = 1251/2880 - 1251/2880 simplified gives 139/320
- So, 18/90 + 15/64 = 139/320
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