Its the metric system thats the problem
1. Collect like terms
(n - 0.3n) + (4.5 - 3)
2. Simplify
0.7n + 1.5
Final Answer:
0.7n + 1.5
So first you need to know 1/20=3/x to get x we need to multiply 3 by 20 . which equals 60 so 1/20 of 60 is 3 .answer is 60