Question

уравнения: 863-(а+129)=196. (901-х)+478=802

Answer 1

1)863-a-129=196
734-a=196
-a=196-734
-a=538
2)901-x+478=802
1379-x=802
-x=802-1379
-x=-577

Answer 2

863-(а+129)=196
863-а-129=196
-а=196-863+129
-а=-538
а=-(-538)
а=538


(901-х) +478=802
901-х+478=802
-х=802-478-901
-Х=-577
Х=-(-577)
Х=577