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x/y = 5/6
x= 5/6 y
y+ 5/6 y = 77
y = ????
maka berapa x ????
x + 1/2y = ???
dijawab sendiri ya , jangan lupa vote terbaik :)
umur ayah 6/11. 77 = 42
Jadi umur ibu(35)+(21) 1/2 umur ayah adalah = 56
Semoga bermanfaat, Good luck ^^