Question

\(\dfrac{x}{3}=\dfrac{65}{39}\)

\(\dfrac{x-5}{15}=\dfrac{42}{105}\)

\(\dfrac{8}{x+3}=\dfrac{56}{91}\)

 

Answer 1

a: =>x/3=5/3

=>x=5

b: =>x-5=2/5x15=6

=>x=11

c: =>x+3=13

=>x=10

Answer 2

\(\dfrac{5}{3}=\dfrac{65}{39}\)

\(\dfrac{11-5}{15}=\dfrac{42}{105}\)

\(\dfrac{8}{10+3}=\dfrac{56}{91}\)

Answer 3

\(\dfrac{x}{3}=\dfrac{65}{39}\)

\(=\dfrac{x\cdot13}{3\cdot13}=\dfrac{65}{39}=\dfrac{x\cdot13}{39}\)

\(x\cdot13=65\)

\(x=\dfrac{65}{13}\)