Eric Nicholas K's answer to Cshjwrk's Secondary 2 Maths Singapore question.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
When two fractions are being multiplied, the corresponding numerators multiply and the corresponding denominators multiply.
We group like terms together (we group all numbers together, all x together, all y together etc).
Lastly, the x - 2y and the 2y - x are not the same number, but they look similar. The trick is to write x - 2y as - (2y - x) or to write 2y - x as - (x - 2y), so that there will be a term which is common in both the numerator and the denominator, which will cancel out each other, leaving behind -1.
We group like terms together (we group all numbers together, all x together, all y together etc).
Lastly, the x - 2y and the 2y - x are not the same number, but they look similar. The trick is to write x - 2y as - (2y - x) or to write 2y - x as - (x - 2y), so that there will be a term which is common in both the numerator and the denominator, which will cancel out each other, leaving behind -1.
Date Posted:
4 years ago
360 Tutoring Program