Multiplication is always the same. A huge help is using a calculator. In year 3 you work on times tables, I think. If you have trouble with a specific question please elaborate.
Answer:
n=15/2 or n=7.5. (their two versions of the same number. one in fraction form the other in decimal form.)
Step-by-step explanation:
(n represents 'a number' in this equasion)
3n=5n-15
3n=5n-15
3n-5n=-15 (isolate the variale)
-2n=-15
n=15/2 (a negative divided by a negative is a positive)
n=7.5
You can but it’s not fun
All you have to do is be bored all day every day