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y = 3 + 2x
x + y = 27
x + 3 + 2x = 27
3x = 24
x = 8
Jadi bilangan pertama adalah 8
y = 3 + 2x
y = 3 +2(8)
y = 3 + 16
y = 19
Jadi bilangan kedua adalah 19
b = 3 + a
a + 3 + a = 27
2a = 27 - 3
2a = 24
a = 12
a + b = 27
12 + b = 27
b = 27 - 12
b = 15