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1 answer:
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Answer:
x = 9,-21
Step-by-step explanation:
Given:
Transport -7 to add 8:
Cancel absolute sign and add plus-minus to 15:
Transport 6 to subtract ±15:
Consider:
or
or
Solution:
or
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Second Method
Given:
Transport -7 to add 8:
Absolute Function Property:
Consider both intervals:
When x ≥ a then:
Transport 6 to subtract 15:
When x < a then:
Transport -6 to add 15:
Transport negative sign to 21:
Solution:
or
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