Lucia tried to solve the system below.
Lucia’s Work
What error did Lucia make?
Wh...
Mathematics, 10.10.2020 20:01 kendrabrown41
Lucia tried to solve the system below.
Lucia’s Work
What error did Lucia make?
When Lucia solved the second equation for x, she subtracted 2y from both sides.
When Lucia solved for the value of y, she treated –2y as 2y.
When Lucia solved for the value of x, she added 18 to both sides.
When Lucia solved the second equation for x, she treated –2(–9) as 18 instead of –18.
Answers: 2
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