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How do you solve 1/10 + 1/15 - 1/13 => 1/6 - 1/13 =>7/78 should be answer

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To get the answer, you need to first find the common divisor of the denominators by multiplying all the three. That is 10  15  13 to get 1950. We multiply all the three denominators since there is no other common divisor. Therefore, when 1950 is divided by all the fractions it will be 195/1950 + 130/1950 ? 150/1950 which is 175/1950. When we simplify the answer by dividing the fraction with 5 the answer becomes 7/78.

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