Solve 5x - 3y = 9 for y.
5x - 3y = 95x = 9 + 3y5x - 9 = 3y ( 5x - 9 ) / 3 = yy = ( 5 / 3x ) - ( 9 / 3 ) ( I just split the common denominator to individual parts ) y = 5 / 3x - 3