Toán Lớp 7: b1 tìm x
a)|x-2| + | x-8 | =6
b)|2x-1|+|y-3x|=0
b2 tìm x
a)(2x-8) (10+2x) bé hơn hoặc bằng 0
b)(|x|+5) (x-3) < 0
b3 tìm x,y thuộc Z
a)xy-3x+2y=5
b)(1/x)-(y/2)=1/4
c)(3x-5) (2x+1)=12
help meeeeeeeeeeeeeeeeeeee
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Toán Lớp 7: b1 tìm x
a)|x-2| + | x-8 | =6
b)|2x-1|+|y-3x|=0
b2 tìm x
a)(2x-8) (10+2x) bé hơn hoặc bằng 0
b)(|x|+5) (x-3) < 0
b3 tìm x,y thuộc Z
a)xy-3x+2y=5
b)(1/x)-(y/2)=1/4
c)(3x-5) (2x+1)=12
help meeeeeeeeeeeeeeeeeeee
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