What is the solution of the equation (4x-15)/21=1
方程(4x-15)/21=1的解是多少
<gadget id="calculator">15 / 21</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">(5/7) + 1</gadget>
<output>12/7 = around 1.714286</output>

<gadget id="calculator">4 / 21</gadget>
<output>4/21 = around 0.190476</output>

<gadget id="calculator">(12/7) / (4/21)</gadget>
<output>9</output>

<result>9</result>