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It is the same as the negative of the fraction with the same denominator positive. eg: 2/-3 = -2/3 -4/-5 = --4/5 = 4/5 You are creating an equivalent fraction by multiplying both the numerator and denominator by -1.
5/10 = 1/2 You can divide the numerator and the denominator by the same number and get an equivalent fraction.
51/2 = 11/2 = 33/6 so the answer is 33.
Convert to equivalent fractions with the same denominator then the addition can be made and the result simplified if possible: 2/5 + 1/2 = (2×2)/(5×2) + (1×5)/(2×5) = 4/10 + 5/10 = (4+5)/10 = 9/10
You must convert the fractions to equivalent fractions with a common denominator, which in this case is 20.