А) 2/5х +14 = 3/5
2\5х=3\5-14
2\5х=3\5-13 5\5
2\5х=-13 2\5
х=-67\5*5\2
х=-67\2
х=-33 1\2
б) 2-1/3 (х-6) = 11
2-1\3х+2=11
-1\3х=11-4
-1\3х=7
х=7\1*(-3\1)
х=-21
а) -3:х = 2/5 :4/9
-3*4.9
х = ------------------
2\5
-14.7
х= --------
2\5
х=-36.75 или -36 3\4
б) х : (-2 / 3) = (-3) : 1/2.
-2\3*(-3)
х=------------
1\2
2
х=------
1\2
х=4