equation 511 258 875 459
equation 530 1085 856 1219
equation 147 481 457 506
equation 236 169 365 216
text 118 526 486 1276
text 118 234 486 457
text 510 104 877 243
text 510 474 877 1069
text 510 1234 877 1278
text 118 108 485 150