Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 2 | Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
Please help me thanks in advance
Date Posted: 5 years ago
Views: 527
instruction says : Use simultaneous eqns to solve
unit digit: x
tens digit: y
x+y = 12 ... ... ... [1]
x = 2y ... ... ... [2]
subst. [2] into [1],
3y = 12
y = 4
x = 8
number is 48
...
[ extra: use pri method ]
unit digit : 2u
tens digit : u
2u+u = 12
u = 4
no. is 48.
...
unit digit: x
tens digit: y
x+y = 12 ... ... ... [1]
x = 2y ... ... ... [2]
subst. [2] into [1],
3y = 12
y = 4
x = 8
number is 48
...
[ extra: use pri method ]
unit digit : 2u
tens digit : u
2u+u = 12
u = 4
no. is 48.
...
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
tip: u can try writing out the number using the unknown to visualise how the number should look like
Date Posted:
5 years ago
360 Tutoring Program