How to use ListPlot with specific form of data

I have a big data in this form {x,{y1,y2}}

expData = {{5.6, {4.5, 7.5}}, {7, {1.5, 7.5}}, {20, {2,12}}, {31, {1.5, 10}}}; 

I am trying to use ListPlot as ListPlot[expData] but did not work? I can manipulate the data form to be in the standard form of MMA using Table, but is there a direct or short way to make MMA plot this data?