Đáp án:
`a, |x+1/3| ÷2=32`
`-> |x+1/3| = 32×2`
`-> |x+1/3| = 64`
`+, x+1/3 = 64`
`-> x = 191/3`
`+, x+1/3 = -64`
`-> x = -193/3`
Vậy `x ∈ {-193/3 ; 191/3 }`
` b, 2/3.(3x-2)+25%=-9/6`
`-> 2/3 . (3x-2) = -9/6 - 25%`
`-> 2/3 . (3x-2) = -7/4`
`-> 3x-2 = -21/8`
`-> 3x = -5/8`
`-> x = -5/24`
Vậy `x = -5/24`
`c, 2/3 . 3/2.(x-1/2)=15/12`
`-> 1 . (x-1/2) = 15/12`
`-> x-1/2 = 15/12`
`-> x = 7/4`
Vậy `x=7/4`
`d, x-19/13 =13/5`
`-> x= 13/5 + 19/13`
`-> x = 134/15`
Vậy ` x = 134/15`
`Go od luck!`