A weight lifter can bench press 189 kg. How many milligrams (mg) is this?
Answer: We know that:

We are given, that a weight lifter can bench press 189 kg
Therefore, a weight lifter can bench press:



Therefore,
is equal to the 
Answer:
m = 21
n= 25
Step-by-step explanation:
the equations are:
n + m= 46
5m-30 = 3n
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Answer:
3
Step-by-step explanation:
18/6=3