Solve the equation: (3/10)*5+3x=45.
解方程：(3/10)*5+3x=45．
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * 5</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">45 - (3/2)</gadget>
<output>87/2 = around 43.5</output>

<gadget id="calculator">(87/2) / 3</gadget>
<output>29/2 = around 14.5</output>

<result>29/2 = around 14.5</result>