A ) x - 1/2 = 3/1/ . 5/6
B ) x/5 = -3/14 . 7/3
C ) x + 2/3 = 9/15 . 5/27
D ) x : 4/11 = 11/4 . 2
1 câu trả lời
`a)`
`x - 1/2 = 3/1 . 5/6`
`x - 1/2 = 5/2`
`x = 5/2 + 1/2`
`x = 3`
`Vậy: x = 3`
`b)`
`x/5 = (-3)/14 . 7/3`
`x/5 = (-1)/2`
`=> x . 2 = -5`
`=> x = -5 : 2`
`=> x = (-5)/2`
`Vậy: x = (-5)/2`
`c)`
`x + 2/3 = 9/15 . 5/27`
`x + 2/3 = 1/9`
`x = 1/9 - 2/3`
`x = (-5)/9`
`Vậy: x = (-5)/9`
`d)`
`x : 4/11 = 11/4 . 2`
`x : 4/11 = 11/2`
`x = 11/2 . 4/11`
`x = 2`
`Vậy: x = 2`