In order to use the elimination method, we have to multiply the equation by some number, so that one of the variable has the same coefficient.
For example, multiplying the first equation by 3 and the second by 2 gives the following, equivalent system:
Now, we can subtract the two equations, and we will cancel (eliminate) the x variable:
Now that y is known, plug it into one of the equations: for example, if we use the first one we get
Answer:
About 100 times more words in this month than in last month.
Step-by-step explanation:
Last month Levi had written 125 words.
This month he has written 12,589 words
This is = 100.64 times more words than in last month
Approximately, Levi has written 100 more times words this month than in last month.