equation 139 998 459 1036
equation 200 383 401 407
equation 201 462 400 487
equation 168 191 432 215
text 510 108 880 1276
text 118 1085 488 1276
text 117 503 488 984
text 117 232 485 365
text 118 424 453 444
text 117 108 485 172