900-(14х-8):20=894
900-14х+8:20=894
-14х+900+8:20=894
-14х+908:20=894
-14х+45,4=894
-14х=894-45,4
-14х=848,6
х=-60,6142857143
900-(14х-8):20=894
900-14х+8:20=894
-14х+900+8:20=894
-14х+908:20=894
-14х+45,4=894
-14х=894-45,4
-14х=848,6
х=-60,6142857143