Ответ:
7 × □ + 55 = 111
7 × □ = 111 − 55 = 56
□ = 56 : 7 = 8
36 : □ + 284 = 293
36 : □ = 293 − 284 = 9
□ = 36 : 9 = 4
9 × □ + 797 = 878
9 × □ = 878 − 797 = 81
□ = 81 : 9 = 9
48 : □ + 514 = 522
48 : □ = 522 − 514 = 8
□ = 48 : 8 = 6
Ответ: 8; 4; 9; 6.
7 × □ + 55 = 111
7 × □ = 111 − 55 = 56
□ = 56 : 7 = 8
36 : □ + 284 = 293
36 : □ = 293 − 284 = 9
□ = 36 : 9 = 4
9 × □ + 797 = 878
9 × □ = 878 − 797 = 81
□ = 81 : 9 = 9
48 : □ + 514 = 522
48 : □ = 522 − 514 = 8
□ = 48 : 8 = 6
Ответ: 8; 4; 9; 6.