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Va Roggggggggggdau Coroanaaaaaaaaaa class=

Răspuns :

Explicație pas cu pas:

m(axr)=m(axb)+m(bxr)=17+66=83 grade

m(qxa)=m(qxr)-m(axr)=90-83=7 grade

m(qxb)=m(qxa)+m(axb)=7+17=24 grade