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Răspuns: 43 probleme ✅
notam cu x- raspunsuri Dana si y raspunsuri Alin
[tex]\large{\blue{\bf{\left \{ {{x+y=63} \atop {x=23+y}} \right. <=> \left \{ {{y+23+y=63} \atop {x=23+y}} \right. <=> \left \{ {{2y=63-23} \atop {x=23+y}} \right. <=> \left \{ {{2y=40} \atop {x=23+y}} \right. <=>\left \{ {{y=20} \atop {x=23+20}} \right. <=>\left \{ {{y=20} \atop {x=43}} \right. }}}[/tex]
