How do you add #43/635 +78/93#?

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Answer 1 · 2018-02-13T10:43:59

#43/635 +78/93#

#= 53529/59055#

The biggest issue in this addition of fractions is that the denominators are uncomfortable, and the LCD is not obvious, nor easy to find.

Let's use the product of the prime factors to find the LCD

#635 = " "5 " "xx 127#
#" "93 = 3" "xx31#

#LCD = 3xx5xx31xx127 = 635 xx 93#

#43/635 +78/93#

#= (43xx93 +78xx635)/(635 xx 93#

#=(3999+ 49530)/(59055)#

#=53529/59055#

Although the working of this question involves big numbers, it follows the process of adding of any fractions.

There is no common factor between the two denominators, so a calculator can be used for the calculations.