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(3x+9+2x-2)/4
(5x-7)/4
3/4x + 9/4 + 1/2x - 1/2= 0
4(3/4x + 9/4 + 1/2x - 1/2)= 0
3x + 9 + 2x - 2= 0
3x + 2x + 9 - 2= 0 (0 dihilangkan)
5x= -9 + 2
5x= -7
x= -7/5
x= -1 2/5