Envision Math 2.0: Grade 7, Volume 1
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Envision Math 2.0: Grade 7, Volume 1 View details
9. Divide Rational Numbers
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Exercise 7 Page 61

Multiply the new numerator by the reciprocal of the new denominator.

- 8/3

Practice makes perfect
A complex fraction is a rational expression that has at least one fraction in its numerator or denominator, or both. We want to simplify the given complex fraction. - 45/310 When dividing real numbers, the quotient of an integer a by an integer b is always positive if those integers have the same sign. cc Same Sign & Different Signs (+)/(+)=(+) & (+)/(-)=(-) (-)/(-)=(+) & (-)/(+)=(-) In our case one number is positive and one number is negative, so the quotient will be negative. Now, we need to start by multiplying the numerator by the reciprocal of the denominator. - 45/310 ⇔ - 4/5 * 10/3 Let's calculate the product and simplify the result!
- 4/5 * 10/3
- 4* 10/5 * 3
- 40/15
- 40/ 5/15/ 5
- 8/3