What is the least common denominator for 2/5 and 1/10?

I need to know this problem because I will fail classes. Please get back to me on this, my grades depend on this questions, Thank You.
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4 Answers

2/5 & (1/10)...kommon bottom=10

add...(4/10)+(1+10)=5/10=1/2=0.5
by

The answer is ten. Reasoning is because 5 goes evenly into ten. You look at the denominators of both fractions and find the LCD or least common denominator. The smallest number that both of the denominators can be made into to be even.

by Level 10 User (57.4k points)
IDK! Sorry! :(
by
I am pretty sure it is 10.
by

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