x+y=14 and 130x+150y=1920 can be used to determine the number of months Lance lived in Portugal and number of months Lance lived in Brazil.
Step-by-step explanation:
Total time spent = 14 months
Words learned per month in Portugal = 130
Words learned per month in Brazil = 150
Total words learned = 1920
Let,
x represent Portugal.
y represent Brazil.
According to given statement;
x+y=14
130x+150y=1920
x+y=14 and 130x+150y=1920 can be used to determine the number of months Lance lived in Portugal and number of months Lance lived in Brazil.
Keywords: linear equations, elimination method
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