Question 197561
Simplify by removing factors of 1 
18x*5 / 21x*3
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{{{18x*5/21x*3}}}
18x*5 = 90x
21x*3 = 63x
{{{18x*5/21x*3}}}
= 90x/63x
= 90/63
= 10/7
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A factor of 1 wouldn't change anything ???