8.4y-15-3.4y=10, what is the solution of y
8.4y-15-3.4y=10，y的解是多少
<gadget id="calculator">10 + 15</gadget>
<output>25</output>

<gadget id="calculator">25 / 5</gadget>
<output>5</output>

<result>5</result>