Kaitlyn solved the equation for x using the following calculations.
Answers
Given : Kaitlyn solved the equation for x using the following calculations.
-5.4 + x = 12.2
-5.4 = -5.4
______________
x = 6.8
To Find :
What error, if any, did she make?
She should have added 5.4 to each side.
She should have added the inverse of 5.4 to each side.
She made a computational error when she subtracted 5.4 from 12.2.
She should have added 12.2 to each side.
Solution:
She should have added 5.4 to each side.
-5.4 + x = 12.2
+5.4 = +5.4
______________
x = 17.6
She should have added 5.4 to each side.
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