Question

Решить уравнения
1) 2 (3-x)+7x=4-(3x+2)
2) x/3+ x-1/5=1

Answer 1

Объяснение:

2(3 - х) + 7х = 4 - (3х + 2)

6 - 2х + 7х = 4 - 3х - 2

6 + 5х = 2 - 3х

5х + 3х = 2 - 6

8х = -4

х = -4 : 8

х = -4/8

х = -1/2

х/3 + (х-1)/5 = 1 | * 15

5х + 3(х - 1) = 15

5х + 3х - 3 = 15

8х = 15 + 3

8х = 18

х = 18/8

х = 9/4

х = 2. 1/4