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-4x = 3-2
-4x = 1
-x = 1/4
x = -1/4
b. x - 12 = 2x + 36
x - 2x = 36 + 12
-x = 48
x = -48
c. -5x - 4x + 10 = 1
-9x = 1 - 10
-9x = -9
x = 1
untuk yg d ane kurang ngerti. N maaf klo ane kurang teliti