1)
476 - (x-672) =326
(x-672) = 476 - 326
x-672 = 150
х = 150 + 672
х = 822
Проверка:
476 - (822-672) = 326
476-150 = 326
326 = 326
ответ: х = 822
2)
987 - (x+364) = 519
(x+364) = 987 - 519
x+364 =468
х = 468 - 364
х = 104
987 - (104+364) = 519
987 - 468 = 519
519 = 519
ответ: х = 104
3)
(134+x) - 583=426
(134+x) = 583+426
134+x = 1009
х = 1009 - 134
х = 875
(134+875) - 583=426
1009 - 583=426
426=426
ответ: х = 875
476-(х-672)=326
(х-672)=476-326
х-672=150
х=150+672
х=822
2)
987-(х+364)=519
(х+364)=987-519
х+364=468
х=468-364
х=104
3)
(134+х)-583=426
(134+х)=426+583
134+х=1009
х=1009-134
х=875
1)
476 - (x-672) =326
(x-672) = 476 - 326
x-672 = 150
х = 150 + 672
х = 822
Проверка:
476 - (822-672) = 326
476-150 = 326
326 = 326
ответ: х = 822
2)
987 - (x+364) = 519
(x+364) = 987 - 519
x+364 =468
х = 468 - 364
х = 104
Проверка:
987 - (104+364) = 519
987 - 468 = 519
519 = 519
ответ: х = 104
3)
(134+x) - 583=426
(134+x) = 583+426
134+x = 1009
х = 1009 - 134
х = 875
Проверка:
(134+875) - 583=426
1009 - 583=426
426=426
ответ: х = 875