Question

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

Answer 1

1)4х+7=-28-х

4х+х=-28-7

5х=-35

х=-7

2)2(3-4х)-5=6-7(х+8)

6-8х-5=6-7х-56

х=51

Answer 2

4x+7=-28-x  

4х+х=-28-7

5х=-35

х=-35/5

х=-7

проверка:

 4*(-7)+7=-28-(-7) 

-21=-21

 2(3-4x)-5=6-7(x+8)

6-8х-5=6-7х-56

-8х+7х=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