Question

2) (11x + 14) - (5 x - 8) = 25
3)12-4(x-3)=39-9x
4)2(3x+5)-3(4x-1)=11,8

Answer 1

Ответ:

2) х = 1/2; 3) х = 3; 4) х = 12/60 = 1/5 = 0.2

Пошаговое объяснение:

2) 11х + 14 - 5х + 8 = 25

6х + 22 = 25

6х = 3

х = 1/2

3) 12 - 4(х - 3) = 39 - 9х

12 - 4х + 12 = 39 - 9х

9х - 4х = 39 - 24

5х = 15

х = 3

4) 2(3х + 5) - 3(4х-1) = 11,8

6х + 10 - 12х + 3 = 11,8

-6х + 13 = 11,8

-6х = -1,2

6х = 1,2

х = 12/60 = 1/5 = 0.2