Question

решите уравнение
(10-2,1х):1,37=5

Answer 1

(10-2,1х):1,37=5
(10-21/10х)*100/137=5
1000/137-210/137х=5
1000-210х=685
-210х=685-1000
-210х=-315
х=3/2=1,5