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OpenStudy (anonymous):
Solve the proportion. -5/7=15/x
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OpenStudy (astrophysics):
\[\frac{ -5 }{ 7 }=\frac{ 15 }{ x }\] Cross multiply
OpenStudy (astrophysics):
\[-5x=15(7)\]
OpenStudy (astrophysics):
\[-5x=105 \implies x = \frac{ -105 }{ 5 } \implies x = -21\]
OpenStudy (anonymous):
Thank you!!!
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