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c=35-b
b-a=9
a=b-9
(a+b+c) / 3=13
b-9+b+35-b=39
a=4
b=13
c=22
maka abc=4*13*22=1144
y + z = 35
z = -y + 35
y - x = 9
-x = 9 - y
x = y - 9
(y - 9 + y - y + 35)/3 = 13
(y + 26)/3 = 13
y + 26 = 39
y = 13
z = -13 + 35
= 22
(x + 13 + 22)/3 = 13
(x + 35)/3 = 13
(x + 35) = 39
x = 4
Hasil kali
= 4 × 13 × 22
= 1.144