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4a + 8b = 104
a - 3/4b = 4 kali 4
4a - 3b = 16
4a + 8b = 104
4a - 3b = 16
-------------------- -
11b = 88
b = 8
a - 3/4b = 4
a - 3/4(8) = 4
a - 6 = 4
a = 10
maka
a² + b²
10² + 8²
164
^_^
cherry