Решите уравнение ( 1/4 ÷ 3/4x - 1/2) + 2/5 = 1/2

( 1/4 ÷ 3/4x - 1/2) + 2/5 = 1/2  1/4 ÷ 3/4x - 1/2 = 1/2-2/5 1/4 ÷ 3/4x  = 1/2-2/5+1/2 1/4 ÷ 3/4x  = 2/2-2/5 1/4 ÷ 3/4x  = 1-2/5 1/4 ÷ 3/4x  = 5/5-2/5 3/4x  = 1/4:3/5 3/4х=1/4*5/3 3/4х=5/12 х=5/12:3/4 х=5/12*4/3 х=5/9