equation 153 696 486 776
equation 124 446 486 568
equation 565 298 878 404
equation 171 1128 486 1210
text 510 419 878 1276
text 510 108 877 286
text 118 795 485 1111
text 118 1218 485 1276
text 118 108 485 427
text 118 587 485 674