Xiao Ming and Xiao Liang read the same book, Xiao Ming read 30 pages, and the number of pages Xiao Ming read was 8 pages less than that of Xiao Liang. How many pages did Xiaoliang read? (solution with equation)
小明和小亮看同样的一本书，小明看了30页，小明看的页数比小亮的2倍少8页．小亮看了多少页？(用方程解答)
<gadget id="calculator">30 + 8</gadget>
<output>38</output>

<gadget id="calculator">38 / 2</gadget>
<output>19</output>

<result>19</result>