1000, 993, 986, 979, 972, 965, 958, 951, 944, 937, 930, 923, 916, 909, 902, 895, 888, 881, 874, 867, 860, 853, 846, 839, 832, 825, 818, 811, 804, 797, 790, 783, 776, 769, 762, 755, 748, 741, 734, 727, 720, 713, 706, 699, 692, 685, 678, 671, 664, 657, 650, 643, 636, 629, 622, 615, 608, 601, 594, 587, 580, 573, 566, 559, 552, 545, 538, 531, 524, 517, 510, 503, 496, 489, 482, 475, 468, 461, 454, 447, 440, 433, 426, 419, 412, 405, 398, 391, 384, 377, 370, 363, 356, 349, 342, 335, 328, 321, 314, 307, 300, 293, 286, 279, 272, 265, 258, 251, 244, 237, 230, 223, 216, 209, 202, 195, 188, 181, 174, 167, 160, 153, 146, 139, 132, 125, 118, 111, 104, 97, 90, 83, 76, 69, 62, 55, 48, 41, 34, 27, 20, 13, 6,-1 (только так)
ответ: а) а * 948 - 6 390 = 429 690
а * 948 = 429 690 + 6 390
а * 948 = 436 080
а = 436 080 : 948
а = 460
460 * 948 - 6 390 = 429 690
436 080 - 6 390 = 429 690
429 690 = 429 690
б) 273 996 : b + 15 764 = 16 151
273 996 : b = 16 151 - 15 764
273 996 : b = 387
b = 273 996 : 387
b = 708
273 996 : 708 = 16 151 - 15 764
387 = 387
в) (50 - х) : 7 + 195 = 40 * 5
(50 - х) : 7 + 195 = 40 * 5
(50 - х) : 7 + 195 = 200
(50 - х) : 7 = 200 - 195
(50 - х) : 7 = 5
50 - х = 5 * 7
50 - х = 35
х = 50 - 35
х = 15
(50 - 15) : 7 + 195 = 40 * 5
35 : 7 + 195 = 200
5 + 195 = 200
200 = 200
г) (270 : у - 2) * 30 = 7 *120
(270 : у - 2) * 30 = 840
270 : у - 2 = 840 : 30
270 : у - 2 = 28
270 : у = 28 + 2
270 : у = 30
у = 270 : 30
у = 9
(270 : 9 - 2) * 30 = 7 * 120
(30 - 2) * 30 = 840
28 * 30 = 840
840 = 840
Пошаговое объяснение:
) (49+23)-(40+20)=12
) (51-12)+37=76