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4x = -16
x = -4
a = -4
a + 11 = -4 + 11
= 7
5x -x = -7 -9
4x = -16
x = -16/4
x = -4
x = a
Maka, nilai :
a +11
= x +11
= -4 +11
= 7
Itu jawabannya.