Question

1/4+0,14÷(4-0,8÷0,5-1/2)

Answer 1

1/4 + 14/100 : (4 - 8/10 : 5/10 - 1/2) =
1/4 + 7/50 : (4 - 4/5 : 1/2 - 1/2) = 
1/4 + 7/50 : (4 - 4/5 . 2/1 - 1/2) = 
1/4 + 7/50 : (4 - 8/5 - 1/2) = 
1/4 + 7/50 : (40/10 - 16/10 - 5/10) = 
1/4 + 7/50 : [(40-16-5)/10] = 
1/4 + 7/50 : 19/10 = 
1/4 + 7/50 . 10/19 = 
1/4 + 70/950 = 
1/4 + 7/95 ... mmc 4 e 95 = 4 x 95 = 380
380:4.1 / 380 + 380:95.7/380 = 
95/380 + 4/380 = 99/380