Question

Solve the given proportion for x.  Answer to two decimal places. x/5=16/21​

Answer 1

Step-by-step explanation:

$\frac{x}{5} = \frac{16}{21} \\ by \: cross \: multiplication \\ x \times 21 = 5 \times 16 \\ 21x = 80 \\ x = \frac{80}{21} \\ x = 3.8$

Answer 2

$\\ \sf\longmapsto \dfrac{x}{5}=\dfrac{16}{21}$

$\\ \sf\longmapsto 21x=16(5)$

$\\ \sf\longmapsto 21x=80$

$\\ \sf\longmapsto x=\dfrac{80}{21}$

$\\ \sf\longmapsto x=3.6$