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Question:

|10 - x| = 4 Which of the following options is the correct solution set for the above equation?

A {6, 14}
Explaination

The bars which surround the equation signify "absolute value". When you have an absolute value, it means that the expression is always positive or zero.
Thus, the equation |10 - x| = 4 has two solutions: x = 6, |10 - 6| = 4;
and x = 14, |10 - 14| =|- 4| =4.