Page 139 - aljaber

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2x − 19 = 6(x − 2) (. )

x ()

4 ( ) −4 ( ) 7( ) −7 () ()

77 4 4 ()
a = ax − b ba x ()
b(a − bx)
b(a2 − 1) ( )
b(a2 + 1) ( )
a(b2 + 1)
a(b2 + 1)
b2(a + 1) ( )
b2(a + 1) ( )
a(b2 + 1)
a(b2 − 1)

10y − (21 − y) = 1 y

−1 ( ) 1( ) −2 ( ) 2 ()

2:3:5 x :y :z [AHSME 1957]

a y = ax − 10 100 zyx

5 () 3( ) 3( ) 2 ()

2 2

[AHSME 1956] ( )

.

19 ( ) 18 ( ) 17 ( ) 16 ( )