equation 678 1400 1401 1487
text 297 1683 1404 1883
equation 697 1589 1401 1676
equation 619 1888 1401 1959
text 297 1271 1403 1393
text 297 1493 1404 1582
text 297 1966 1402 2030
equation 553 1228 1401 1267
text 297 233 1404 1226