15,4x-8)-5,2x+10)=6,5x-20)
15,4x-8)-5,2x+10)=6,5x-20)
<gadget id="calculator">50 - 120</gadget>
<output>-70</output>

<gadget id="calculator">120 + (-70)</gadget>
<output>50</output>

<gadget id="calculator">60 - 10 - 30</gadget>
<output>20</output>

<gadget id="calculator">50 / 20</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>