Đáp án:
Giải thích các bước giải:
`b) 5/16 : 0,125 - (2 1/4 - 0,6 ) . 10/11`
`=5/16 : 1/8 - ( 9/4 - 3/5 ) . 10/11`
`= 5/2 - 33/20 . 10/11`
`= 5/2 - 3/2 = (5-3)/2=2/2=1`
`c) (-1,2).(-3/24)+(0,4-1 4/15):1 2/3`
`= (-6/5) . (-1/8) + ( 2/5 - 19/15 ) : 5/3`
`= 3/20 + (-13/15) : 5/3`
`= 3/20 + (-13)/25 = -37/100`
`d) (5 9/8-2 3/4 +50%):0,3`
`= (49/8-11/4+1/2):0,3`
`= (49/8-22/8+4/8):0,3`
`= 31/8 : 3/10 = 155/12`
`e) 17 2/31 - (15/17 + 6 2/31)`
`= 17 + 2/31 - 15/17 - 6 - 2/31`
`= (17-6) + (2/31-2/31) -15/17`
`=11+0-15/17=172/17`
