What is the common denominator for 3/25, 2/27, & 3/45?

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What is the common denominator for 3/25, 2/27, & 3/45?

2007-02-10 06:01:00 · 3 answers · asked by labarw 1 in Science & Mathematics ➔ Mathematics

3 answers

25= 5x5

27 = 3x3x3

45 = 3x3x5

3x3x3x5x5 = 675

81/675 , 50/675 , 45/675

2007-02-10 06:05:52 · answer #1 · answered by 7 · 0⤊ 0⤋

Well, 25 = 5*5
27 = 3*3*3
45 = 3*3*5
So the LCD is 3*3*3*5*5 = 27*25 = 675.
Rule: You use the highest power of each prime factor appearing
in any of these factorisations and multiply them together.

2007-02-10 06:13:50 · answer #2 · answered by steiner1745 7 · 0⤊ 0⤋

675

So, that would be 81/675, 50/675 and 45/675.

2007-02-10 06:09:07 · answer #3 · answered by Cathy K 4 · 0⤊ 0⤋