Two rational numbers p/q and r/s are equivalent if and only if p x s = q x r. Using this rule, check whether -8/12 and -10/15 are equivalent. What are the products -8 x 15 and 12 x -10?

Question

Accepted Answer

-120 and -120, equivalent. -8 x 15 = -120 and 12 x -10 = -120. Equal products, so -8/12 and -10/15 are equivalent (both equal -2/3).

Two rational numbers $\frac{p}{q}$ and $\frac{r}{s}$ are equivalent if and only if $p x s = q x r$ .
Using this rule, check whether $\frac{- 8}{12}$ and $\frac{- 10}{15}$ are equivalent.
What are the products - $8 \times 15$ and 12 $x - 10$ ?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Equivalent Rational Numbers practice

Two rational numbers qp​ and sr​ are equivalent if and only if pxs=qxr.Using this rule, check whether 12−8​ and 15−10​ are equivalent.What are the products -8×15 and 12 x−10?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Equivalent Rational Numbers practice

Two rational numbers $\frac{p}{q}$ and $\frac{r}{s}$ are equivalent if and only if $p x s = q x r$ .
Using this rule, check whether $\frac{- 8}{12}$ and $\frac{- 10}{15}$ are equivalent.
What are the products - $8 \times 15$ and 12 $x - 10$ ?