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Xy+xz+5x= 485 y+ z=92 x=? Plss

Răspuns :

[tex]\hbox { Scoti factor comun pe x: } x(y+z)+5x=485[/tex]

[tex]92x+5x=485[/tex] ⇒ [tex]97x=485[/tex]

[tex]\boxed {x=5}[/tex]


xy+xz+5x=485
y+z=92x
x(y+z)+5x=485
x ·92x+5x =485
97x=485
x=5