Question

Calcule o valor de x nas proporções
a)x+2/3=15/9 b)1/2/4=x/32

Answer 1

a)
$\frac{x+2}{3} = \frac{15}{9} \\ \\ 9.(x+2)=3.15 \\ 9x+18=45 \\ 9x=45-18 \\ 9x=27 \\ x=27\div9 \\ x=3$

b)
$\frac{ \frac{1}{2} }{4} = \frac{x}{32} \\ \\ 4x= \frac{32}{2} \\ 4x=16 \\ x=16\div4 \\ x=4$