Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
Secondary 1 | Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
Please help me to this question. I know I must change the denominator to 8, but I confuse about the + and - sign.
Date Posted: 3 years ago
Views: 179
(y - 1)/4 - (3y + 1)/8 = 1
2(y - 1)/(4 x 2) - (3y + 1)/8 = 1
(2y - 2)/8 - (3y + 1)/8 = 1
(2y - 2 - (3y + 1))/ 8 = 1
(2y - 2 - 3y - 1)/8 = 1
(2y - 3y - 2 - 1)/8 = 1
(-y - 3)/8 = 1
-y - 3 = 8
-y = 8 + 3
-y = 11
y = -11
2(y - 1)/(4 x 2) - (3y + 1)/8 = 1
(2y - 2)/8 - (3y + 1)/8 = 1
(2y - 2 - (3y + 1))/ 8 = 1
(2y - 2 - 3y - 1)/8 = 1
(2y - 3y - 2 - 1)/8 = 1
(-y - 3)/8 = 1
-y - 3 = 8
-y = 8 + 3
-y = 11
y = -11
Shorter working to use if you can understand the previous one already :
(y - 1)/4 - (3y + 1)/8 = 1
(2y - 2)/8 - (3y + 1)/8 = 1
(2y - 2 - 3y - 1)/8 = 1
(-y - 3)/8 = 1
-y - 3 = 8
y = -3 - 8
= -11
(y - 1)/4 - (3y + 1)/8 = 1
(2y - 2)/8 - (3y + 1)/8 = 1
(2y - 2 - 3y - 1)/8 = 1
(-y - 3)/8 = 1
-y - 3 = 8
y = -3 - 8
= -11
Thank you J.
Welcome
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Hey! Hope this helps :) if youre not sure of the sign, always use brackets first then expand so its clearer
Date Posted:
3 years ago
Thank you very much.
No probs :)
Thank you very much.
360 Tutoring Program