If the equation 4x-3ax+2-a=0 about x has only one solution, then a=how much.
若关于x的方程4x-3ax+2-a=0只有一个解，则a=多少．
<gadget id="calculator">0 + 3</gadget>
<output>3</output>

<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<result>4/3 = around 1.333333</result>