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Verified answer
Mapel : MatematikaBab : Persamaan Linear Satu Variabel
x - (4 - x) = 3 ( x - 4) - 4
x - 4 + x = 3x - 12 - 4
2x - 4 = 3x - 16
2x - 3x = -16 + 4
-x = -12
x = 12