`#thlc`

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`a, 1/3 - |3/4-x|=1/12`

`<=> | 3/4-x | = 1/12 + 1/3`

`<=> | 3/4-x| =  5/12`

TH1 : `3/4 - x = 5/12`

`<=> x = 3/4 - 5/12`

`<=> x = 9/12 - 5/12`

`<=> x =1/3`

TH2 : `3/4 - x = -5/12`

`<=> x = 3/4 - ((- 5)/12)`

`<=> x = 9/12 + 5/12`

`<=> x = 7/6`

Vậy `...`

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`b, 3/2 - 4/5x = 5/6`

`<=> 4/5x = 3/2-5/6`

`<=> 4/5x = 9/6 - 5/6`

`<=> 4/5x = 2/3`

`<=> x = 2/3 : 4/5`

`<=> x = 5/6`

Vậy `...`

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`c, (-1)/2 - (5/4 - x ) = ((-3)/4)^2`

`<=> (-1)/2 - (5/4 -x) = 9/16`

`<=> 5/4 - x = (-1)/2 - 9/16`

`<=> 5/4-x = -17/16`

`<=> x= 5/4 - (-17/16)`

`<=> x = 37/16`

Vậy `...`

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`d, (|x-3|)/5 =1/2`

`<=> 2 |x-3| = 5`

`<=> | x-3| = 5/2`

`<=> x-3=5/2` hoặc `x-3=-5/2`

`<=> x = 5/2 + 3` hoặc `x=-5/2 + 3`

`<=> x = 11/2` hoặc `x = 1/2`

Vậy `...`

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