Step-by-step guide on adding unlike fractions by multiplying denominators, demonstrating the conversion of 7/5 + 4/7 into equivalent fractions with a common denominator of 35.
How to add/subtract unlike fractions by multiplying denominators, showing the example (7/5 + 4/7) converted to 21/35 + 20/35 = 41/35 = 1 6/35, with a green arrow indicating 5 x 7 = 35, labeled "Basic Math #11".