Bringing fractions to a common denominator
Answers are for parents and teachers.
1
Bring 2/(3x) and 5/(4y) to a common denominator.
8y/(12xy) and 15x/(12xy)
2
Bring 1/(a - 3) and 2/(a² - 9) to a common denominator.
(a + 3)/((a - 3)(a + 3)) and 2/((a - 3)(a + 3))
3
Write 3/(x - y) and 4/(y - x) as fractions with the same denominator.
3/(x - y) and -4/(x - y)
4
Find the least common multiple of 15 and 20.
60