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24+4x= 30
4x= 6
x= 1,5
b. Mencari y
6y+18=7,5
1,5y=18
y= 18/1,5
= 12 cm
4/6 = 5/(6+x)
24 + 4x = 30
4x = 6
x = 3/2 = 1,5
Mencari y
6/y = 7,5/(y+3)
6y + 18 = 7,5y
6y - 7,5y = -18
-1,5y = -18
y = 18/1,5 = 12