Answers

2015-12-12T12:54:57+08:00
To add 3 fractions w/ diff. denominator Find their LCD
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2015-12-12T14:26:18+08:00
First, find their LCD

Like 3/4 + 2/3 + 1/5 = n

Their LCD is 60. Then find its numerator by dividing the LCD to the denominator and multiplying it do the numerator.

(60 ÷ 4)3 = 45
(60 ÷ 3)2 = 40
(60 ÷ 5)1 = 12

Now, we have 45/60, 40/60, and 12/60.

Add their numerators and reduce it to lowest term. That's simple ☺
45 + 40 + 12 = 97
97/60 to mixed number is 1 17/60

That's it.
1 5 1