X+93=517, 204-x=156, x-429=361
Х+93=517 х= 517-93 х=424 204-х=156 х=204-156 х=48 х-429=361 х=429+361 х=790
Х=517-93 х=424 424+93=517 517=517 204-х=156 х=204-156 х=48 204-48=156 156=156 х-429=361 х=361+429 х=790 790-429=361 361=361