Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 6 | Maths
| Algebra
One Answer Below
Anyone can contribute an answer, even non-tutors.
i need help
Date Posted: 1 year ago
Views: 279
See 1 Answer
(a) (5-k) packets of seaweed left
(b) 5-k+2k = (5+k) packets of seaweed
(b) 5-k+2k = (5+k) packets of seaweed
wait i dont understand how does 5-k+2k give u (5+k) ?
This is algebra.
k is a variable that can represent any number. k can be 1, 2, 3...
In this mathematical expression, 5-k+2k, you cannot add or subtract 5 from the terms with k because you don't know what k represents.
But for the 2 terms with k, you can add/subtract them.
It may be difficult to grasp the concept when you are first learning algebra but after some practice, you should be able to get it.
Just to add, 2k means (2×k).
k is a variable that can represent any number. k can be 1, 2, 3...
In this mathematical expression, 5-k+2k, you cannot add or subtract 5 from the terms with k because you don't know what k represents.
But for the 2 terms with k, you can add/subtract them.
It may be difficult to grasp the concept when you are first learning algebra but after some practice, you should be able to get it.
Just to add, 2k means (2×k).
ohh now i understand ty
360 Tutoring Program