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OpenStudy (anonymous):
What is the value of the expression |x| + |y + z| when x = –7, y = 8, and z = –11?
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OpenStudy (welshfella):
the 2 vertical lines around the variables mean the 'absolute value' - that is the positive value even though they may be negative for example |-5| = 5
OpenStudy (anonymous):
sooo
OpenStudy (welshfella):
so what is the value of |x| when x = -7?
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