Частина 2. Номер 424
x + 134 = 257
x = 257 – 134
x = 123
123 + 134 = 257
257 = 257
x – 425 = 345
x = 345 + 425
x = 770
770 – 425 = 345
345 = 345
x – 271 = 136
x = 136 + 271
x = 407
407 – 271 = 136
136 = 136
x + 134 = 257
x = 257 – 134
x = 123
123 + 134 = 257
257 = 257
x – 425 = 345
x = 345 + 425
x = 770
770 – 425 = 345
345 = 345
x – 271 = 136
x = 136 + 271
x = 407
407 – 271 = 136
136 = 136