Question

sa se determine x din egalitatile

Answer 1

Vezi solutia in atasament.

Answer 2

[tex]a) \frac{x+1}{5} = \frac{4}{2} =\ \textgreater \ x+1= \frac{5*4}{2} =\ \textgreater \ x+1=10=\ \textgreater \ x=9\\\\ b) \frac{3}{5} = \frac{7x-2}{20} =\ \textgreater \ 7x-2= \frac{20*3}{5} =\ \textgreater \ 7x-2=12\\ =\ \textgreater \ 7x=14=\ \textgreater \ x=2\\\\ c) \frac{5x-2}{2x+3} = \frac{8}{7} \ \textless \ =\ \textgreater \ (5x-2)*7=(2x+3)*8\\ =\ \textgreater \ 35x-14=16x+24=\ \textgreater \ 35x-16x=24+14=\ \textgreater \ 19x=38=\ \textgreater \ \\ x=38:19=\ \textgreater \ x=2[/tex] (da refresh la pagina si iti va aparea rezolvarea)