text 151 553 806 1219
equation 217 422 739 528
text 151 1553 806 1651
text 851 1340 1506 1994
equation 886 1188 1466 1311
text 151 191 806 388
text 851 184 1506 1158
equation 151 1688 808 1955
equation 152 1253 821 1496
header 370 128 1288 158