Question 1152061

One third of a number added to four fifth of itself is equal to seventeen. find the number? 
<pre>Let the number be N
Then we get: {{{matrix(1,3, (1/3)N + (4/5)N, "=", 17)}}}
5N + 12N = 15(17) ------ Multiplying by LCD, 15
17N = 15(17)
N, or {{{highlight_green(matrix(1,5, Number, "=", 15(17)/17, "=", 15))}}}
That's IT!! COULDN'T be any EASIER! Nothing  COMPLEX or EXTREMELY time-consuming.....NOTHING that should take a DAY!!