Завдання:
Розв’яжи рівняння:
1) (x + 4537) + 5297 = 11 342;
2) (x + 4792) – 539 = 6397;
3) (x – 8397) – 5372 = 1792;
4) 5372 – (x + 4127) = 973;
5) 9797 + (5392 – x) = 10 397;
6) 8374 – (5973 – x) = 4392.
Розв'язок:
1) (x + 4537) + 5297 = 11 342
x + 4537 = 11 342 - 5297
x + 4537 = 6045
x = 6045 - 4537
x = 1508
2) (x + 4792) – 539 = 6397
x + 4792 = 6397 + 539
x + 4792 = 6936
x = 6936 - 4792
x = 2144
3) (x – 8397) – 5372 = 1792
x - 8397 = 1792 + 5372
x - 8397 = 7164
x = 7164 + 8397
x = 15 561
4) 5372 – (x + 4127) = 973;
x + 4127 = 5372 - 973
x + 4172 = 4399
x = 4399 - 4127
x = 272
5) 9797 + (5392 – x) = 10 397
5392 - x = 10 397 - 9797
5392 - x = 600
x = 5392 - 600
x = 4792
6) 8374 – (5973 – x) = 4392
5973 - x = 8374 - 4392
5973 - x = 3982
x = 5973 - 3982
x = 1991