Question

реши уравнение 9(143-13х)=234

Answer 1

$9(143-13x)=234 \ 1287-117x=234 \ -117x=-1053 \ x=-1053/(-117) \ x=9$

Answer 2

http://tex.z-dn.net/?f=9%28143-13x%29%3D234+%5C%5C+1287-117x%3D234+%5C%5C+-117x%3D-1053+%5C%5C+x%3D-1053%2F%28-117%29+%5C%5C++x%3D9

Answer 3

(9*143)-(9*13х)=234
1287-117х=234
-117х=-1053
х=1053/117
х=9