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OpenStudy (anonymous):
A student has solved this inequality. Is the student's answer correct? Explain. 3 - 4z < 7 z < -1
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OpenStudy (zzr0ck3r):
subtract 3 from both sides -4z<4 divide by 4 on both sides -z<1 multiply by negative 1 and switch the sign z>-1
OpenStudy (zzr0ck3r):
understand?
OpenStudy (anonymous):
yes thx
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