text{Tìm x ∈ Z, biết: }text{1, 3x + 26 2} text{11) 2( x + 7 ) -16 }text{2,}|2x-7|-152times3^2 text{ 12) x – 9| 7} text{3, 2(x – 1) + 3(x – 2) x – 4} text{13)( x – 5 )( x + 7 ) 0 }text{4) x + 5 -2 + 11 } text{14) x + 4 –14 – 9 }text{5) -3x -5 + 29} text{15) 3x –14 + 2} text{6) | x | - 9 -2 + 17} text{16) 2| x | 4 – (–8)}text{7) | x – 9 | -2 +...
Đọc tiếp
\(\text{Tìm x ∈ Z, biết: }\)
\(\text{1, 3x + 26 = 2}\) \(\text{11) 2( x + 7 ) = -16 }\)
\(\text{2,}\)\(|2x-7|-15=2\times3^2\) \(\text{ 12) x – 9| = 7}\)
\(\text{3, 2(x – 1) + 3(x – 2) = x – 4}\) \(\text{13)( x – 5 )( x + 7 ) = 0 }\)
\(\text{4) x + 5 = -2 + 11 }\) \(\text{14) x + 4 = –14 – 9 }\)
\(\text{5) -3x = -5 + 29}\) \(\text{15) 3x = –14 + 2}\)
\(\text{6) | x | - 9 = -2 + 17}\) \(\text{16) 2| x | = 4 – (–8)}\)
\(\text{7) | x – 9 | = -2 + 17 }\) \(\text{17) |x – 2| = 7}\)
\(8)-3< x< 2\) \(\text{18) x - 17 = (-11) . (-5)}\)
\(9)-789< x\le789\) \(\text{19) x – 5| = (-4)2}\)
\(\text{10) x - 9 = -14}\) \(\text{20) | x + 19 | + | x + 5 | + | x + 2011 | = 4x}\)
\(\text{Sẽ tick cho người nhanh và đúng nhất nha~!}\)
\(\text{Cần từ hôm nay đến trưa ngày mai!}\)