Помогите решить уравнение (3/15+4/9x):2/5=2,5
X≠0 = (3*9x+60)/(9*15*x)=1 (9x+20)/(9*5x)-1=0 (9x+20-9*5x)/(9*5x)=0 36x-20 =0 x=20/36=5/9
( 3/15 + 4/9х ) : 2/5 = 2,5 3/15 + 4/9х = 2/5 • 5/2 4/9х = 1 - ( 3/15 ) 4/9х = 12/15 Х = ( 12/15 ) : ( 4/9 ) Х = 27/15 Х = 1 12/15 Х = 1 4/5 Х = 1,8