Question

x/3-x/2=5/6

numarul a )

Answer 1

[tex] \left \{ {{2x-3x=5} \atop {6[2x-3y)(3x+2Y)=135}} \right. [/tex]⇒$\left \{ {{x=-5} \atop {6[(-10-3y)(-15+2y)]=135}} \right.$⇔$\left \{ {{x=-5} \atop {6(150+24y)=135}} \right.$⇔$\left \{ {{x=-5} \atop {900-144y=135}} \right.$⇔$\left \{ {{x=-5} \atop {y=5.3125}} \right.$