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QUQ@ @pbåîbjn¾a
.x ≥ 2 ( ) 2x + 1 < 3 − x (.)
3 x ()
.x > 1 ( ) x≤2 ( ) x>2 ( ) x <2 ()
2 3 3 3
51
8 > 2x + 7 ≥ 3x − 9 x ()
2
x > −1 ( ) x<1 ( ) x ≤ −1()
2()
2 2 2
5() x
. 5 ()
1( ) x .1
−1 ( )
x 0( )
()
2(x + 4) > 3(x − 1) + 6
4( ) 3( ) 1 ()
89 85 86 ()
100 ( ) 90 93 ( ) 90 ( )
()
. 98 ( )
2000
80
.