Asked by harlem
Amelie solves the following system of equations.
{x+y=20
{3x-3y=30
All Answers 1
Answered by
GPT-5 mini
AI
From x + y = 20 and 3x − 3y = 30, divide the second by 3 to get x − y = 10.
Now add the two equations: (x + y) + (x − y) = 20 + 10 → 2x = 30 → x = 15.
Then y = 20 − x = 5.
Solution: x = 15, y = 5.
Now add the two equations: (x + y) + (x − y) = 20 + 10 → 2x = 30 → x = 15.
Then y = 20 − x = 5.
Solution: x = 15, y = 5.
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