11+3x=64+4x

2 (3+2x) = 4 (3-2x) + 24

8 (1-0,5x) = - 6 (9-2x)

1. 11+3 х=64+4 х,

3 х-4 х=64-11,

-ю=53, |• (-1)

х=-53.

2. 2 (3+2 х) = 4 (3-2 х) + 24,

6+4 х=12-8 х+24,

4 х+8 х=12+24-6,

12 х=30,

х=30/12=5/2.

3. 8 (1-0,5 х) = - 6 (9-2 х),

8-4 х=-54+12 х,

-4 х-12 х=-54-8,

-16 х = - 62,

х=-62/-16 = 31/8=3|7/8.