Question

решите уравнение 2/3/4/9х-4/9+1/20=4/5         5/7/6/7х+3/7-1/2=1/6
Без десятичных добей!!!

Answer 1

2/3:4/9х - 4/9+1/20=4/52/3:4/9х = 45+49-120 = (180+80-9)1802/3:4/9х = 251180 49х = 23*180251 = 251270
х = 251270*94
х = 251120 = 2 11120 
2 забыла