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p = 9
b. =
Q+4 =
Q+4 =
Q+4 = 16
Q = 16-4
Q = 12
c. =
5x =
5x =
5x = 2,4
x = 2,4 : 5
x = 0,48
d. 8 : (y+1) = 16 : (y+6)
8 (y+6) = 16 (y+1)
8y + 48 = 16y + 16
48 - 16 = 16y - 8y
32 = 8y
32 : 8 = y
4 = y
y = 4
KPK antar 4 & 6
4 = 2²
6 = 2. 3
kpk = 2² .3 = 4.3 = 12
jadi B = 12
A : B = 3 : 4
A : 12 = 3 : 4
A = 12 x 3 : 4 = 9
B : C = 6:5
12:C = 6 : 5
C = 12 x 5 : 6 = 10
A : B : C = 9 : 12 : 10