Question

1000-(501Х+19Х)=840

РЕШИТЕ ПРАВИЛЬНО

Answer 1

1000 - ( 501х + 19х ) = 840
1000 - 501х - 19х = 840
-501х - 19х = 840 - 1000
-520х = -160
х = -160 : (-520)
х = 160/520 = 16/52 = 4/13
Ответ: 4/13.