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Dau coroana!!!! va rog ex:6,8,9

Dau Coroana Va Rog Ex689 class=
Dau Coroana Va Rog Ex689 class=

Răspuns :

6)
180-130=50 grade are celalalt ungi
2x+10=50-10
2x=40:2
x=20 grade 
2y+10=100-10
2y=90:2
y=45 grade

7)