1.2+3/10x=8/15x+0.78

Question

1.2+3/10x=8/15x+0.78

Answer 1

Скобок нет?

Тогда: (8/15 - 3/10)х=1,2 - 0,78

(16/30 - 9/30)х=0,42

7/30 х= 21/50

х=(21/50)*30/7 =(21*30)/(50*7)=9/5=1,8

Comments

Нету