text 297 1874 1403 1996
text 297 1172 1402 1825
equation 377 1045 1401 1165
equation 377 768 1401 883
text 297 889 1401 1036
text 297 427 1403 631
equation 471 337 1401 419
equation 590 638 1401 688
text 297 694 1402 759
equation 503 1830 1401 1868
text 297 229 1354 328
equation 669 2000 1401 2040