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3*((33/4)*a+3)+6 = 0
3*(33/4*a+3)+6 = 0
3*(33/4*a+3)+6 = 0
99/4*a+15 = 0
99/4*a+15 = 0
99/4*a+15 = 0 // - 15
99/4*a = -15 // : 99/4
a = -15/99/4
a = -20/33
a = -20/33
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