Question

272. Решите уравнение: 1) (39 + x) - 84 = 78; 2) (-83) + 316 = 425; 3) (600 - 3) - 92 = 126; 4) 253 - (- 459) = 138 5) 502 - (217 - .) - 421; 6) 871 - (x + 167) = 385.​

Answer 1

Ответ:это 1

Пошаговое объяснение:

Answer 2

1) 1 + 39x - 84 = 78 39x - 83 = 78 39x = 161 x = 161/39 x = 4.128

2) -83 + 316 = 425 233 = 425 This equation has no solution.

3) 600 - 3 - 92 = 126 597 - 92 = 126 505 = 126 This equation has no solution.

4) 253 - (-459) = 138 253 + 459 = 138 712 = 138 This equation has no solution.

5) 502 - (217 - x) - 421 = 0 502 - 217 + x - 421 = 0 84 + x - 421 = 0 x - 337 = 0 x = 337

6) 871 - (x + 167) = 385 871 - x - 167 = 385 704 - x = 385 -x = 385 - 704 -x = -319 x = 319

So the solutions are: 1) x = 4.128 2) No solution 3) No solution 4) No solution 5) x = 337 6) x = 319