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maka a =
5x + 19 - 2x - 7
= 3x + 12
x = -12 / 3
x = -4
sehingga dapat didapatkan
a + 11 =
(-4) + 11 = 7
jawaban C
5x-2x = 7-19
3x = -12
a / x = -4
a+11
-4+11 = 7
itu jawabannya