4x+7=-28-x 2 (3-4x) - 5=6-7 (x+8)

4x+7=-28-x

4 х+х=-28-7

5 х=-35

х=-35/5

х=-7

проверка:

4 * (-7) + 7=-28 - (-7)

-21=-21

2 (3-4x) - 5=6-7 (x+8)

6-8 х-5=6-7 х-56

-8 х+7 х=6-56+5-6

-х=-51

х=51

проверка:

2 (3-4*51) - 5=6-7 (51+8)

6-408-5=6-357-56

-407=-407

1) 4 х+7=-28-х

4 х+х=-28-7

5 х=-35

х=-7

2) 2 (3-4 х) - 5=6-7 (х+8)

6-8 х-5=6-7 х-56

х=51