Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 2 | Maths
2 Answers Below
Anyone can contribute an answer, even non-tutors.
I don't know how to do question 1 and 2 can someone help me. Thank you ! :))
Date Posted: 3 years ago
Views: 309
See 2 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
In this first question, I “eliminate” both the positive 6y from the equations by subtracting the equations.
Date Posted:
3 years ago
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
For the second question, we can also substitute the second directly into the first equation because the “2y” in the first equation can be replaced by “x + 3” from the second equation, since 2y = x + 3, getting us
5x + x + 3 = 15
6x = 12
x = 2
And we continue with the second equation to get
2y = 2 + 3 = 5
y = 5/2
5x + x + 3 = 15
6x = 12
x = 2
And we continue with the second equation to get
2y = 2 + 3 = 5
y = 5/2
Date Posted:
3 years ago
360 Tutoring Program