900-×:7=765?????????????

Question

900-×:7=765?????????????

Answer 1

900-х:7=765; -х:7=765-900; -х:7=-135/-1; х:7=135; х=135/7; х=19.28;

Answer 2

Х ÷ 7 =900-765
х ÷7=135
х =135×7
х =945
900-945 : 7 = 765