Đáp án+Giải thích các bước giải:
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`a)`
`x + 3/16 = -5/24`
`x = -5/24 - 3/16`
`x = -19/48`
Vậy `x = -19/48`
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`b)`
`-x-9/2012=1`
`-x = 1 + 9/2012`
`-x = 2021/2012`
`x = -2021/2012`
Vậy `x = -2021/2012`
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`c)`
`3/5 + 4/9 : x = 2/3`
`4/9 : x = 2/3 - 3/5`
`4/9 : x = 1/15`
`x = 4/9 : 1/15`
`x = 4/9 . 15`
`x = 20/3`
Vậy `x=20/3`
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`d)`
`1 1/2x + (-4)/5 = 4`
`1 1/2x = 4 - ((-4)/5)`
`1 1/2 x = 4 + 4/5`
`1 1/2 x = 24/5`
`3/2 x = 24/5`
`x = 24/5 : 3/2`
`x = 24/5 . 2/3`
`x = 16/5`
Vậy `x=16/5`
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`e)`
`7/12 + 3x = 1/3`
`3x = 1/3 - 7/12`
`3x = -1/4`
`x = -1/4 : 3`
`x = -1/4 . 1/3`
`x = -1/12`
Vậy `x = -1/12`
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`f)`
`1/20 - (x- 8/15) = -1/30`
`x - 8/15 = 1/20 - (-1/30)`
`x - 8/15 = 1/20 + 1/30`
`x - 8/15 = 1/12`
`x = 1/12 + 8/15`
`x = 37/60`
Vậy `x = 37/60`
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`g)`
`5 - (2/3 + 3 1/6 + x) = 3 + (-5/9 - 11/18)`
`5 - (2/3 + 3 1/6 + x) = 3 + (-7)/6`
`5 - (23/6 + x) = 11/6`
`23/6 + x = 5- 11/6`
`23/6 + x = 19/6`
`x = 19/6 - 23/6`
`x = -2/3`
Vậy `x=-2/3`
