Solve equation 51-4.5=(51-10x)*3. x = how much.
解方程51-4.5=(51-10x)*3．x=多少．
<gadget id="calculator">51 * 3</gadget>
<output>153</output>

<gadget id="calculator">153 - 51</gadget>
<output>102</output>

<gadget id="calculator">4.5 + 102</gadget>
<output>106.5</output>

<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<gadget id="calculator">106.5 / 30</gadget>
<output>3.55</output>

<result>3.55</result>