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OpenStudy (mayah3):
HELP PLEASE!!!!: 7 + f – 21 = –20
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OpenStudy (oaktree):
Sorry, f-14=-20.
OpenStudy (oaktree):
So x=-6.
OpenStudy (oaktree):
I'm sure it's right.
OpenStudy (turingtest):
subtract 7 from both sides: f-21=-27 add 21 to both sides f-21+21=-27+21 f=-6
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