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Add 45/90 and 42/70

45/90 + 42/70 is 11/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 70 is 630
  2. For the 1st fraction, since 90 × 7 = 630,
    45/90 = 45 × 7/90 × 7 = 315/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    42/70 = 42 × 9/70 × 9 = 378/630
  4. Add the two fractions:
    315/630 + 378/630 = 315 + 378/630 = 693/630
  5. 693/630 simplified gives 11/10
  6. So, 45/90 + 42/70 = 11/10
    In mixed form: 11/10

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