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

Question

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

Answer 1

( 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