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OpenStudy (anonymous):
Patricia subtracted +15 - +6 and got the answer +21. What error did Patricia make? Patricia multiplied the numbers. Patricia added the numbers without making the sign of the number 6 negative. Patricia added the numbers and changed the sign of the number 15 instead of the number 6. Patricia did not make an error: +15 - +6 = +21.
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OpenStudy (anonymous):
someone pleeeease help?!!!
OpenStudy (anonymous):
B.
OpenStudy (ryguy):
yeah its b :P
OpenStudy (anonymous):
Because whenever you subtract with integers, the second number's sign changes.
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