(456 + 112) - x = 400
x - (203 + 303) = 34
(283 - x) - 33 = 0
(536 + x) - 420 = 116
437 - (227 + x) = 0
468 - 217 - x = 51
Ответы
1. (456 + 112) - x = 400
568 - х = 400
х = 568 - 400
х = 168
2. x - (203 + 303) = 34
х - 506 = 34
х = 506 + 34
х = 540
3. (283 - x) - 33 = 0
283 - х = 0 + 33
283 - х = 33
х = 283 - 33
х = 250
4. (536 + x) - 420 = 116
536 + х = 116 + 420
536 + х = 536
х = 536 - 536
х = 0
5. 437 - (227 + x) = 0
227 + х = 437 - 0
227 + х = 437
х = 437 - 227
х = 210
6. 468 - 217 - x = 51
251 - х = 51
х = 251 - 51
х = 200
(456+112)-х=400 х-(203+303)=34 (283-х)-33=0 (536+х)-420=116 437-(227+х)=0
568-х=400
х=568-400
х=168 х-506=34 283-х=0 536+х=116+420 227+х=437
х=283 536+х=536 х=437-227
х=506+34 х=0 х=210
х=540
468-217-х=51 251-х=51
х=251-51
х=2
Немного съехало оформление)))))))))))))извиняюсь