1)1/5+3/8-2/9 = 72/360 +45·3/360 -80/360 = 37/360
21/4+2/9-5/36= (9+8-5)/36=12/36=1/3
3) 1/4+2/9-5/36 =9/36 +8/36-5/36=12/36=1/3
1)1/5+3/8-2/9 = 72/360 +45·3/360 -80/360 = 37/360
21/4+2/9-5/36= (9+8-5)/36=12/36=1/3
3) 1/4+2/9-5/36 =9/36 +8/36-5/36=12/36=1/3