How do you simplify \frac { 7x } { 7} - \frac { x } { 10} 7x7−x10?

1 Answer
MJ
Jan 2, 2018

(9x)/109x10

Explanation:

To simplify (only for addition or subtraction) any fraction, the denominators have to be the same.

In the question, we can see that both fractions have different denominators i.e. one fraction has 7 as denominator and the other has 10 as denominator.

Therefore, to make both denominators equal, take the LCD of the denominators 7 & 107&10.

It is 7xx107×10 = 7070

Now to solve the question,
(7x)/7 - x/107x7−x10 = (((7x)xx10)- (x)xx7)/70((7x)×10)−(x)×770
Which is, (70x-7x)/7070x−7x70 = cancel(63x)^9/cancel(70)^10

Or (9x)/10

Related questions
Impact of this question
1137 views around the world
You can reuse this answer
Creative Commons License