Multiply or divide as indicated.
-$- \frac { 7 } { 10 } \div \frac { 7 } { 9 }$
A) $\frac { 9 } { 10 }$
B) $- \frac { 9 } { 10 }$
C) $\frac { 10 } { 9 }$
D) $- \frac { 49 } { 90 }$

Question

Quizplus · Accepted Answer

Dividing by a fraction is the same as multiplying by its reciprocal. Therefore, $- \frac { 7 } { 10 } \div \frac { 7 } { 9 } = - \frac { 7 } { 10 } \times \frac { 9 } { 7 }$. The 7s cancel out, leaving $- \frac { 9 } { 10 }$.

Multiply or Divide as Indicated −710÷79- \frac { 7 } { 10 } \div \frac { 7 } { 9 }−107​÷97​

Multiply or Divide as Indicated $- \frac { 7 } { 10 } \div \frac { 7 } { 9 }$