Question

Sa se afle x din ptoportile
A) 4 supra 3 =x supra 9
B) 2 supra 3=10supra x
C) 4 supra x=8
Va rog

Answer 1

A) 4/3=x/9
x=4•9 totul supra 3=36/3=22

B) 2/3=10/x
x=10•3 totul supra 2=30/2=15

Answer 2

[tex]\it \dfrac{4}{x}=\dfrac{3}{9} \Rightarrow x = \dfrac{4\cdot9}{3} = \dfrac{36}{3} =12 \\ \\ \\ \dfrac{2}{3}=\dfrac{10}{x} \Rightarrow x = \dfrac{3\cdot10}{2} = 3\cdot5=15 \\ \\ \\ \dfrac{4}{x} =8 \Rightarrow \dfrac{4}{x}=\dfrac{8}{1} \Rightarrow x = \dfrac{4\cdot1}{8} = \dfrac{\ 4^{(4}}{8} \Rightarrow x = \dfrac{1}{2}[/tex]